Number
400,003
- Positive
- Odd
- Composite
- 6 digits
400,003 is an odd 6-digit integer and a composite number. It has 4 divisors and a digital root of 7.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value400,003
Digit count6
Digit sum7
Digital root7repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation269 × 1,487
Distinct prime factors2269, 1,487
Number of divisors4
Sum of divisors σ(n)401,760
Aliquot sum1,757sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)398,248integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 269, 1,487, 400,0034 in total
Arithmetic
Representations
Decimal400,003
Binary110000110101000001119 bits
Octal1415203
Hexadecimal61A83
Base 368KN7
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsfour hundred thousand and three
Ordinalfour hundred thousand and third
Scientific notation4.00003 × 10^5
Engineering notation400.003 × 10^3
Nearest landmarks
Powers & multiples
400,003 to the power 2160,002,400,009
400,003 to the power 364,001,440,010,800,027
400,003 to the power 425,600,768,008,640,043,200,081
400,003 to the power 510,240,384,005,760,043,200,162,000,243
First ten multiples400,003, 800,006, 1,200,009, 1,600,012, 2,000,015, 2,400,018, 2,800,021, 3,200,024, 3,600,027, 4,000,030
Powers of twoBetween 2^18 (262,144) and 2^19 (524,288)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 3
Divisible by 5No, remainder 3
Divisible by 6No, remainder 1
Divisible by 7No, remainder 2
Divisible by 8No, remainder 3
Divisible by 9No, remainder 7
Divisible by 10No, remainder 3
Divisible by 11No, remainder 10
Divisible by 12No, remainder 7
Divisible by 100No, remainder 3
Collatz (3n + 1) trajectory
Steps to reach 1161the total stopping time
Highest value reached1,800,0164× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps400,003 → 1,200,010 → 600,005 → 1,800,016 → 900,008 → 450,004 → 225,002 → 112,501 → 337,504 → 168,752 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage40,000,300%
400,003% as a decimal4,000.03
400,003% of 100400,003
400,003% of 1,0004,000,030
As a fraction of 100400,003/100
Read another way
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Derived from 400,003
Also reads as
#400003 (colour)
- #400003
- Red
- Dark
- Nearest: Maroon
#400003 is a red with RGB values 64, 0, 3 and HSL 357°, 100%, 13%. It is a dark colour, so white text on it reaches 17.2:1 contrast (AAA for normal text). The nearest named colour is Maroon.
Colour values
#400003#400003
HEX#400003
RGBrgb(64, 0, 3)
RGB (0–1)0.251, 0, 0.0118
RGB percentages25.1%, 0%, 1.2%
HSLhsl(357.2, 100%, 12.5%)
HSV / HSBhsv(357.2, 100%, 25.1%)
CMYK0%, 100%, 95.3%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,194,307
CSS custom property--colour: #400003;
Brightness & contrast
Relative luminance0.01097WCAG 2.x, 0 is black and 1 is white
Perceived brightness35 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.22:1
Contrast with white17.22:1WCAG normal text: AAA
Contrast with black1.22:1WCAG normal text: Fail
Greyscale equivalent#0E0E0E
Inverted#BFFFFC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text17.22:1WCAG large text: AAA
Contrast with black, large text1.22:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#00403D
Analogous#400023, #401D00
Triadic#034000, #000340
Split complementary#00401D, #002340
Tetradic#234000, #00403D, #1D0040
Tints, shades & saturation
Channel breakdown
R64
G0
B3
Red64 (25.1%)
Green0 (0%)
Blue3 (1.2%)
Hue357.19°
Saturation (HSL)100%
Lightness12.55%
Dominant channelRed
Hex per channelR 40 · G 00 · B 03
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