Recognised as Decimal number
400,000,000,000,000
- Positive
- Decimal
- 0 d.p.
- Exact fraction
- 2 s.f.
400,000,000,000,000 is a decimal number equal to 400,000,000,000,000⁄1. It lies between 400,000,000,000,000 and 400,000,000,000,000, and as a percentage it is 4 × 10^16%.
Number properties
Absolute value400,000,000,000,000
SignPositive
Integer part400,000,000,000,000
Fractional part0
Decimal places0
Floor400,000,000,000,000
Ceiling400,000,000,000,000
Rounded to nearest400,000,000,000,000
Truncated400,000,000,000,000
Fractions & ratios
Ratio400,000,000,000,000 : 1
As a percentage4 × 10^16%
Reciprocal2.5 × 10^-15≈
Arithmetic
Double800,000,000,000,000
Square1.6 × 10^29
Cube6.4 × 10^43
Square root20,000,000≈
Cube root73,680.6299728077≈
Negation-400,000,000,000,000
Natural logarithm33.622485663≈
Logarithm base 1014.6020599913≈
Representations
Decimal400,000,000,000,000
Scientific notation4 × 10^14
Exponential4e+14
IEEE 754 binary64 (hex)0x42F6BCC41E900000the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x57B5E62132-bit single precision, may lose accuracy
Rounding & precision
Significant figures as written2counted from the digits as typed, not from the value
To 0 decimal places400000000000000
To 1 decimal place400000000000000.0
To 2 decimal places400000000000000.00
To 3 decimal places400000000000000.000
To 4 decimal places400000000000000.0000
To 1 significant figure4e+14
To 2 significant figures4e+14
To 3 significant figures4e+14
To 4 significant figures4e+14
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Neighbouring values
As a fraction
Also reads as
#040E13 (colour)
- #040E13
- Blue
- Dark
- Nearest: Black
#040E13 is a blue with RGB values 4, 14, 19 and HSL 200°, 65%, 5%. It is a dark colour, so white text on it reaches 19.5:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#040E13#040E13
HEX#040E13
RGBrgb(4, 14, 19)
RGB (0–1)0.0157, 0.0549, 0.0745
RGB percentages1.6%, 5.5%, 7.5%
HSLhsl(200, 65.2%, 4.5%)
HSV / HSBhsv(200, 78.9%, 7.5%)
CMYK78.9%, 26.3%, 0%, 92.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer265,747
CSS custom property--colour: #040E13;
Brightness & contrast
Relative luminance0.00387WCAG 2.x, 0 is black and 1 is white
Perceived brightness12.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.49:1
Contrast with white19.49:1WCAG normal text: AAA
Contrast with black1.08:1WCAG normal text: Fail
Greyscale equivalent#0C0C0C
Inverted#FBF1EC
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.49:1WCAG large text: AAA
Contrast with black, large text1.08:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#130904
Analogous#041311, #040613
Triadic#13040E, #0E1304
Split complementary#130407, #131004
Tetradic#100413, #130904, #071304
Tints, shades & saturation
Channel breakdown
R4
G14
B19
Red4 (1.6%)
Green14 (5.5%)
Blue19 (7.5%)
Hue200°
Saturation (HSL)65.22%
Lightness4.51%
Dominant channelBlue
Hex per channelR 04 · G 0E · B 13
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Harmonies
Similar named colours
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