398864978944

Names of 398864978944

• Cardinal: 398864978944 can be written as Three hundred ninety-eight billion, eight hundred sixty-four million, nine hundred seventy-eight thousand, nine hundred forty-four.

Scientific notation

• Scientific notation: 3.98864978944 × 10¹¹

Factors of 398864978944

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 12565084

Divisors of 398864978944

• Number of divisors d(n): 44
• Complete list of divisors:
  1 2 4 8 16 31 32 62 64 124 128 248 256 496 512 992 1024 1984 3968 7936 15872 31744 12565051 25130102 50260204 100520408 201040816 389516581 402081632 779033162 804163264 1558066324 1608326528 3116132648 3216653056 6232265296 6433306112 12464530592 12866612224 24929061184 49858122368 99716244736 199432489472 398864978944
• Sum of all divisors σ(n): 823061166208
• Sum of proper divisors (its aliquot sum) s(n): 424196187264
• 398864978944 is an abundant number, because the sum of its proper divisors (424196187264) is greater than itself. Its abundance is 25331208320

Bases of 398864978944

• Binary: 101110011011110001101001001010000000000₂
• Hexadecimal: 0x5CDE349400
• Base-36: 538HWRGG

Squares and roots of 398864978944

• 398864978944 squared (398864978944²) is 159093271427997563355136
• 398864978944 cubed (398864978944³) is 63456734358260324919729626634256384
• The square root of 398864978944 is 631557.5816534863
• The cube root of 398864978944 is 7361.0873062811

Scales and comparisons

• 398,864,978,944 seconds is equal to 12,682 years, 34 weeks, 6 days, 19 hours, 29 minutes, 4 seconds.
• To count from 1 to 398,864,978,944 would take you about twenty-five thousand, three hundred sixty-five years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 398864978944 cubic inches would be around 613.4 feet tall.

Recreational maths with 398864978944

• 398864978944 backwards is 449879468893
• The number of decimal digits it has is: 12
• The sum of 398864978944's digits is 79
• More coming soon!