399249144

Names of 399249144

• Cardinal: 399249144 can be written as Three hundred ninety-nine million, two hundred forty-nine thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 3.99249144 × 10⁸

Factors of 399249144

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 192

Divisors of 399249144

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 41 42 56 63 72 82 84 123 126 139 164 168 246 252 278 287 328 369 417 492 504 556 574 738 834 861 973 984 1112 1148 1251 1476 1668 1722 1946 2296 2502 2583 2919 2952 3336 3444 3892 5004 5166 5699 5838 6888 7784 8757 10008 10332 11398 11676 17097 17514 19321 20664 22796 23352 34194 35028 38642 39893 45592 51291 57963 68388 70056 77284 79786 102582 115926 119679 135247 136776 154568 159572 173889 205164 231852 239358 270494 319144 347778 359037 405741 410328 463704 478716 540988 695556 718074 792161 811482 957432 1081976 1217223 1391112 1436148 1584322 1622964 2376483 2434446 2872296 3168644 3245928 4752966 4868892 5545127 6337288 7129449 9505932 9737784 11090254 14258898 16635381 19011864 22180508 28517796 33270762 44361016 49906143 57035592 66541524 99812286 133083048 199624572 399249144
• Sum of all divisors σ(n): 1275084720
• Sum of proper divisors (its aliquot sum) s(n): 875835576
• 399249144 is an abundant number, because the sum of its proper divisors (875835576) is greater than itself. Its abundance is 476586432

Bases of 399249144

• Binary: 10111110011000000111011111000₂
• Hexadecimal: 0x17CC0EF8
• Base-36: 6LPAM0

Squares and roots of 399249144

• 399249144 squared (399249144²) is 159399878984732736
• 399249144 cubed (399249144³) is 63640265238358133916777984
• The square root of 399249144 is 19981.2197825859
• The cube root of 399249144 is 736.3449814287

Scales and comparisons

• 399,249,144 seconds is equal to 12 years, 36 weeks, 22 hours, 32 minutes, 24 seconds.
• To count from 1 to 399,249,144 would take you about nineteen 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 399249144 cubic inches would be around 61.4 feet tall.

Recreational maths with 399249144

• 399249144 backwards is 441942993
• The number of decimal digits it has is: 9
• The sum of 399249144's digits is 45
• More coming soon!