Number
339
- Positive
- Odd
- Composite
- 3 digits
339 is an odd 3-digit integer and a composite number. It has 4 divisors and a digital root of 6.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value339
Digit count3
Digit sum15
Digital root6repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation3 × 113
Distinct prime factors23, 113
Number of divisors4
Sum of divisors σ(n)456
Aliquot sum117sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)224integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 3, 113, 3394 in total
Arithmetic
Representations
Decimal339
Binary1010100119 bits
Octal523
Hexadecimal153
Base 369F
Roman numeralCCCXXXIX
In wordsthree hundred and thirty-nine
Ordinalthree hundred and thirty-ninth
Scientific notation3.39 × 10^2
Engineering notation339
Nearest landmarks
Powers & multiples
339 to the power 2114,921
339 to the power 338,958,219
339 to the power 413,206,836,241
339 to the power 54,477,117,485,699
First ten multiples339, 678, 1,017, 1,356, 1,695, 2,034, 2,373, 2,712, 3,051, 3,390
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3Yes
Divisible by 4No, remainder 3
Divisible by 5No, remainder 4
Divisible by 6No, remainder 3
Divisible by 7No, remainder 3
Divisible by 8No, remainder 3
Divisible by 9No, remainder 6
Divisible by 10No, remainder 9
Divisible by 11No, remainder 9
Divisible by 12No, remainder 3
Divisible by 100No, remainder 39
Collatz (3n + 1) trajectory
Steps to reach 150the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps339 → 1,018 → 509 → 1,528 → 764 → 382 → 191 → 574 → 287 → 862 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage33,900%
339% as a decimal3.39
339% of 100339
339% of 1,0003,390
As a fraction of 100339/100
Read another way
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Derived from 339
Other readings
Also reads as
#333399 (colour)
- #333399
- Blue
- Dark
- Nearest: Midnight blue
#333399 is a blue with RGB values 51, 51, 153 and HSL 240°, 50%, 40%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.
Colour values
#333399#333399
HEX#333399
HEX (short)#339
RGBrgb(51, 51, 153)
RGB (0–1)0.2, 0.2, 0.6
RGB percentages20%, 20%, 60%
HSLhsl(240, 50%, 40%)
HSV / HSBhsv(240, 66.7%, 60%)
CMYK66.7%, 66.7%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,355,545
CSS custom property--colour: #333399;
Brightness & contrast
Relative luminance0.05371WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.12:1
Contrast with white10.12:1WCAG normal text: AAA
Contrast with black2.07:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#CCCC66
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.12:1WCAG large text: AAA
Contrast with black, large text2.07:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#999933
Analogous#336699, #663399
Triadic#993333, #339933
Split complementary#996633, #669933
Tetradic#993366, #999933, #339966
Tints, shades & saturation
Channel breakdown
R51
G51
B153
Red51 (20%)
Green51 (20%)
Blue153 (60%)
Hue240°
Saturation (HSL)50%
Lightness40%
Dominant channelBlue
Hex per channelR 33 · G 33 · B 99
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Harmonies
Similar named colours
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