Number
859
- Positive
- Odd
- Prime
- 3 digits
859 is an odd 3-digit integer and a prime number. It has 2 divisors and a digital root of 4.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value859
Digit count3
Digit sum22
Digital root4repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation859
Distinct prime factors1859
Number of divisors2
Sum of divisors σ(n)860
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)858integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 8592 in total
Arithmetic
Representations
Decimal859
Binary110101101110 bits
Octal1533
Hexadecimal35B
Base 36NV
Roman numeralDCCCLIX
In wordseight hundred and fifty-nine
Ordinaleight hundred and fifty-ninth
Scientific notation8.59 × 10^2
Engineering notation859
Nearest landmarks
Powers & multiples
859 to the power 2737,881
859 to the power 3633,839,779
859 to the power 4544,468,370,161
859 to the power 5467,698,329,968,299
First ten multiples859, 1,718, 2,577, 3,436, 4,295, 5,154, 6,013, 6,872, 7,731, 8,590
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 3
Divisible by 5No, remainder 4
Divisible by 6No, remainder 1
Divisible by 7No, remainder 5
Divisible by 8No, remainder 3
Divisible by 9No, remainder 4
Divisible by 10No, remainder 9
Divisible by 11No, remainder 1
Divisible by 12No, remainder 7
Divisible by 100No, remainder 59
Collatz (3n + 1) trajectory
Steps to reach 1147the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps859 → 2,578 → 1,289 → 3,868 → 1,934 → 967 → 2,902 → 1,451 → 4,354 → 2,177 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage85,900%
859% as a decimal8.59
859% of 100859
859% of 1,0008,590
As a fraction of 100859/100
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Derived from 859
Other readings
Also reads as
#885599 (colour)
- #885599
- Violet
- Dark
- Nearest: Dark slateblue
#885599 is a violet with RGB values 136, 85, 153 and HSL 285°, 29%, 47%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.
Colour values
#885599#885599
HEX#885599
HEX (short)#859
RGBrgb(136, 85, 153)
RGB (0–1)0.5333, 0.3333, 0.6
RGB percentages53.3%, 33.3%, 60%
HSLhsl(285, 28.6%, 46.7%)
HSV / HSBhsv(285, 44.4%, 60%)
CMYK11.1%, 44.4%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,934,809
CSS custom property--colour: #885599;
Brightness & contrast
Relative luminance0.14031WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.52:1
Contrast with white5.52:1WCAG normal text: AA
Contrast with black3.81:1WCAG normal text: Fail
Greyscale equivalent#656565
Inverted#77AA66
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.52:1WCAG large text: AAA
Contrast with black, large text3.81:1WCAG large text: AA
Named colours
Hue familyviolet
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#669955
Analogous#665599, #995588
Triadic#998855, #559988
Split complementary#889955, #559966
Tetradic#996655, #669955, #558899
Tints, shades & saturation
Channel breakdown
R136
G85
B153
Red136 (53.3%)
Green85 (33.3%)
Blue153 (60%)
Hue285°
Saturation (HSL)28.57%
Lightness46.67%
Dominant channelBlue
Hex per channelR 88 · G 55 · B 99
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Harmonies
Similar named colours
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