Number

494

Positive
Even
Composite
3 digits

494 is an even 3-digit integer and a composite number. It has 8 divisors and a digital root of 8.

Number properties

ParityEvendivisible by 2

SignPositive

PrimalityComposite

Absolute value494

Digit count3

Digit sum17

Digital root8repeated digit sum

PalindromicYesreads the same backwards

Happy numberNosquared-digit sums reach 1

Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation2 × 13 × 19

Distinct prime factors32, 13, 19

Number of divisors8

Sum of divisors σ(n)840

Aliquot sum346sum of the proper divisors

ClassificationDeficientthe aliquot sum is less than the number

Euler's totient φ(n)216integers below n that share no factor with it

SquarefreeYesno repeated prime factor

All divisors1, 2, 13, 19, 26, 38, 247, 4948 in total

Arithmetic

Previous number493

Next number495

Double988

Half247

Square244,036

Cube120,553,784

Square root22.226110771≈irrational, shown to 9 decimal places

Cube root7.905129393≈

Negation-494

Reciprocal0.0020242915≈

494 factorial8047581401096453061274191190078612843324… (1,118 digits)

Representations

Decimal494

Binary1111011109 bits

Octal756

Hexadecimal1EE

Base 36DQ

Roman numeralCDXCIV

In wordsfour hundred and ninety-four

Ordinalfour hundred and ninety-fourth

Scientific notation4.94 × 10^2

Engineering notation494

Nearest landmarks

Next prime499+5

Previous prime491−3

Distance to nearest prime3

Nearest square below484

Nearest square above529

Powers & multiples

494 to the power 2244,036

494 to the power 3120,553,784

494 to the power 459,553,569,296

494 to the power 529,419,463,232,224

First ten multiples494, 988, 1,482, 1,976, 2,470, 2,964, 3,458, 3,952, 4,446, 4,940

Powers of twoBetween 2^8 (256) and 2^9 (512)

Divisibility tests

Divisible by 2Yes

Divisible by 3No, remainder 2

Divisible by 4No, remainder 2

Divisible by 5No, remainder 4

Divisible by 6No, remainder 2

Divisible by 7No, remainder 4

Divisible by 8No, remainder 6

Divisible by 9No, remainder 8

Divisible by 10No, remainder 4

Divisible by 11No, remainder 10

Divisible by 12No, remainder 2

Divisible by 100No, remainder 94

Collatz (3n + 1) trajectory

Steps to reach 148the total stopping time

Highest value reached1,6723× the starting value

Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven

First steps494 → 247 → 742 → 371 → 1,114 → 557 → 1,672 → 836 → 418 → 209 → …

Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage49,400%

494% as a decimal4.94

494% of 100494

494% of 1,0004,940

As a fraction of 100494/100

Read another way

As seconds8 minutes and 14 seconds

As bytes494 B

As a 24-bit colour#0001EE

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Neighbouring numbers

Derived from 494

Nearby primes

#449944 (colour)

#449944
Green
Dark
Nearest: Forest green

#449944 is a green with RGB values 68, 153, 68 and HSL 120°, 38%, 43%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Forest green.

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Colour values

#449944#449944

HEX#449944

HEX (short)#494

RGBrgb(68, 153, 68)

RGB (0–1)0.2667, 0.6, 0.2667

RGB percentages26.7%, 60%, 26.7%

HSLhsl(120, 38.5%, 43.3%)

HSV / HSBhsv(120, 55.6%, 60%)

CMYK55.6%, 0%, 55.6%, 40%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,495,684

CSS custom property--colour: #449944;

Brightness & contrast

Relative luminance0.24429WCAG 2.x, 0 is black and 1 is white

Perceived brightness125.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.89:1

Contrast with white3.57:1WCAG normal text: Fail

Contrast with black5.89:1WCAG normal text: AA

Greyscale equivalent#818181

Inverted#BB66BB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#9C8C3Cno red cones; affects about 1% of men; ΔE 40 from the original

Deuteranopia#91854Ano green cones; the most common form, about 1% of men; ΔE 39.7 from the original

Tritanopia#379586no blue cones; rare, and affects men and women equally; ΔE 38.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.57:1WCAG large text: AA

Contrast with black, large text5.89:1WCAG large text: AAA

Named colours

Forest green · ΔE 12 Medium seagreen · ΔE 15.9 Sea green · ΔE 17.7 Green · ΔE 18.7 Olivedrab · ΔE 20.2 Dark green · ΔE 21

Nearest named CSS colourForest green (#228B22)ΔE 11.96, a distinctly different colour

Hue familygreen

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#994499

Analogous#6F9944, #44996F

Triadic#444499, #994444

Split complementary#6F4499, #99446F

Tetradic#446F99, #994499, #996F44

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#C4E5C4

Lighter +30%#A1D5A1

Lighter +20%#7EC57E

Lighter +10%#5AB65A

Darker −10%#347634

Darker −20%#255225

Darker −30%#152F15

Darker −40%#050C05

More saturated +25%#28B528

Less saturated −25%#607D60

Channel breakdown

R68

G153

B68

Red68 (26.7%)

Green153 (60%)

Blue68 (26.7%)

Hue120°

Saturation (HSL)38.46%

Lightness43.33%

Dominant channelGreen

Hex per channelR 44 · G 99 · B 44

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494

Number properties

Factors & divisors

Arithmetic

Representations

Nearest landmarks

Powers & multiples

Divisibility tests

Collatz (3n + 1) trajectory

As a percentage & fraction

Read another way

Keep nerding

Neighbouring numbers

Derived from 494

Nearby primes

Other readings

#449944 (colour)

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

Nerdulate something else