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Number

441

  • Positive
  • Odd
  • Composite
  • Perfect square
  • 3 digits

441 is an odd 3-digit integer and a composite number. It has 9 divisors and a digital root of 9.

Number properties

ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value441
Digit count3
Digit sum9
Digital root9repeated digit sum
PalindromicNoreads differently backwards
Perfect squareYes, 21²
Happy numberNosquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum

Factors & divisors

Prime factorisation3^2 × 7^2
Distinct prime factors23, 7
Number of divisors9
Sum of divisors σ(n)741
Aliquot sum300sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)252integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 3, 7, 9, 21, 49, 63, 147, 4419 in total

Arithmetic

Previous number440
Next number442
Double882
Half220.5
Square194,481
Cube85,766,121
Square root21exact
Cube root7.611662611≈
Negation-441
Reciprocal0.0022675737≈
441 factorial2482805684832755243723189296194164346189… (977 digits)

Representations

Decimal441
Binary1101110019 bits
Octal671
Hexadecimal1B9
Base 36C9
Roman numeralCDXLI
In wordsfour hundred and forty-one
Ordinalfour hundred and forty-first
Scientific notation4.41 × 10^2
Engineering notation441

Nearest landmarks

Next prime443+2
Previous prime439−2
Distance to nearest prime2
Nearest square below441
Nearest square above484

Powers & multiples

441 to the power 2194,481
441 to the power 385,766,121
441 to the power 437,822,859,361
441 to the power 516,679,880,978,201
First ten multiples441, 882, 1,323, 1,764, 2,205, 2,646, 3,087, 3,528, 3,969, 4,410
Powers of twoBetween 2^8 (256) and 2^9 (512)

Divisibility tests

Divisible by 2No, remainder 1
Divisible by 3Yes
Divisible by 4No, remainder 1
Divisible by 5No, remainder 1
Divisible by 6No, remainder 3
Divisible by 7Yes
Divisible by 8No, remainder 1
Divisible by 9Yes
Divisible by 10No, remainder 1
Divisible by 11No, remainder 1
Divisible by 12No, remainder 9
Divisible by 100No, remainder 41

Collatz (3n + 1) trajectory

Steps to reach 127the total stopping time
Highest value reached1,4923× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps441 → 1,324 → 662 → 331 → 994 → 497 → 1,492 → 746 → 373 → 1,120 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage44,100%
441% as a decimal4.41
441% of 100441
441% of 1,0004,410
As a fraction of 100441/100

Read another way

As seconds7 minutes and 21 seconds
As bytes441 B
As a 24-bit colour#0001B9

Keep nerding

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Neighbouring numbers

Nearby primes

Also reads as

#444411 (colour)

  • #444411
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#444411 is a yellow with RGB values 68, 68, 17 and HSL 60°, 60%, 17%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark olivegreen.

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Colour values

#444411#444411
HEX#444411
HEX (short)#441
RGBrgb(68, 68, 17)
RGB (0–1)0.2667, 0.2667, 0.0667
RGB percentages26.7%, 26.7%, 6.7%
HSLhsl(60, 60%, 16.7%)
HSV / HSBhsv(60, 75%, 26.7%)
CMYK0%, 0%, 75%, 73.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,473,873
CSS custom property--colour: #444411;

Brightness & contrast

Relative luminance0.05404WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.09:1
Contrast with white10.09:1WCAG normal text: AAA
Contrast with black2.08:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#BBBBEE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4A410Ano red cones; affects about 1% of men; ΔE 5.4 from the original
Deuteranopia#4B4314no green cones; the most common form, about 1% of men; ΔE 4.5 from the original
Tritanopia#493F3Ano blue cones; rare, and affects men and women equally; ΔE 27.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.09:1WCAG large text: AAA
Contrast with black, large text2.08:1WCAG large text: Fail

Named colours

Dark olivegreen · ΔE 18.4Dark slate grey · ΔE 33.7Dim grey · ΔE 34.7Olive · ΔE 36.7Saddle brown · ΔE 37.1Dark green · ΔE 38.9
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 18.37, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#111144
Analogous#442A11, #2A4411
Triadic#114444, #441144
Split complementary#112A44, #2A1144
Tetradic#11442A, #111144, #44112A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D3D34E
Lighter +30%#BEBE30
Lighter +20%#969625
Lighter +10%#6D6D1B
Darker −10%#1B1B07
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#4F4F06
Less saturated −25%#39391C

Channel breakdown

R68
G68
B17
Red68 (26.7%)
Green68 (26.7%)
Blue17 (6.7%)
Hue60°
Saturation (HSL)60%
Lightness16.67%
Dominant channelRed and Green
Hex per channelR 44 · G 44 · B 11

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Every value on this page was computed from “441” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.