Recognised as Decimal number
4.9 × 10^17
- Positive
- Decimal
- 0 d.p.
- Exact fraction
- 2 s.f.
4.9 × 10^17 is a decimal number equal to 490,000,000,000,000,000⁄1. It lies between 490,000,000,000,000,000 and 490,000,000,000,000,000, and as a percentage it is 4.9 × 10^19%.
Number properties
Absolute value4.9 × 10^17
SignPositive
Integer part490,000,000,000,000,000
Fractional part0
Decimal places0
Ceiling490,000,000,000,000,000
Rounded to nearest490,000,000,000,000,000
Truncated490,000,000,000,000,000
Fractions & ratios
Ratio490,000,000,000,000,000 : 1
As a percentage4.9 × 10^19%
Reciprocal2.04081633 × 10^-18≈
Arithmetic
Double9.8 × 10^17
Half2.45 × 10^17
Square2.401 × 10^35
Cube1.17649 × 10^53
Square root700,000,000≈
Cube root788,373.516310524≈
Negation-4.9 × 10^17
Natural logarithm40.733181786≈
Logarithm base 1017.69019608≈
Representations
Decimal4.9 × 10^17
Scientific notation4.9 × 10^17
Exponential4.9e+17
IEEE 754 binary64 (hex)0x439B33519D8FC400the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x5CD99A8D32-bit single precision, may lose accuracy
Rounding & precision
Significant figures as written2counted from the digits as typed, not from the value
To 0 decimal places490000000000000000
To 1 decimal place490000000000000000.0
To 2 decimal places490000000000000000.00
To 3 decimal places490000000000000000.000
To 4 decimal places490000000000000000.0000
To 1 significant figure5e+17
To 2 significant figures4.9e+17
To 3 significant figures4.9e+17
To 4 significant figures4.9e+17
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Neighbouring values
As a fraction
Also reads as
#049E16 (colour)
- #049E16
- Green
- Dark
- Nearest: Green
#049E16 is a green with RGB values 4, 158, 22 and HSL 127°, 95%, 32%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Green.
Colour values
#049E16#049E16
HEX#049E16
RGBrgb(4, 158, 22)
RGB (0–1)0.0157, 0.6196, 0.0863
RGB percentages1.6%, 62%, 8.6%
HSLhsl(127, 95.1%, 31.8%)
HSV / HSBhsv(127, 97.5%, 62%)
CMYK97.5%, 0%, 86.1%, 38%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer302,614
CSS custom property--colour: #049E16;
Brightness & contrast
Relative luminance0.24537WCAG 2.x, 0 is black and 1 is white
Perceived brightness121.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.91:1
Contrast with white3.55:1WCAG normal text: Fail
Contrast with black5.91:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#FB61E9
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.55:1WCAG large text: AA
Contrast with black, large text5.91:1WCAG large text: AAA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#9E048C
Analogous#3F9E04, #049E63
Triadic#16049E, #9E1604
Split complementary#63049E, #9E043F
Tetradic#043F9E, #9E048C, #9E6304
Tints, shades & saturation
Channel breakdown
R4
G158
B22
Red4 (1.6%)
Green158 (62%)
Blue22 (8.6%)
Hue127.01°
Saturation (HSL)95.06%
Lightness31.76%
Dominant channelGreen
Hex per channelR 04 · G 9E · B 16
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Harmonies
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