9909138942

Names of 9909138942

• Cardinal: 9909138942 can be written as Nine billion, nine hundred nine million, one hundred thirty-eight thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 9.909138942 × 10⁹

Factors of 9909138942

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 190

Divisors of 9909138942

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 9 17 18 27 34 37 51 54 74 102 111 131 153 222 262 289 306 333 393 459 578 629 666 786 867 918 999 1179 1258 1734 1887 1998 2227 2358 2601 3537 3774 4454 4847 5202 5661 6681 7074 7803 9694 10693 11322 13362 14541 15606 16983 17161 20043 21386 29082 32079 33966 34322 37859 40086 43623 51483 60129 64158 75718 82399 87246 96237 102966 113577 120258 130869 154449 164798 192474 227154 247197 261738 288711 291737 308898 340731 463347 494394 577422 583474 634957 681462 741591 875211 926694 1022193 1269914 1400783 1483182 1750422 1904871 2044386 2224773 2625633 2801566 3809742 4202349 4449546 4959529 5251266 5714613 7876899 8404698 9919058 10794269 11429226 12607047 14878587 15753798 17143839 21588538 25214094 29757174 32382807 34287678 37821141 44635761 64765614 75642282 89271522 97148421 133907283 183502573 194296842 267814566 291445263 367005146 550507719 582890526 1101015438 1651523157 3303046314 4954569471 9909138942
• Sum of all divisors σ(n): 24208816560
• Sum of proper divisors (its aliquot sum) s(n): 14299677618
• 9909138942 is an abundant number, because the sum of its proper divisors (14299677618) is greater than itself. Its abundance is 4390538676

Bases of 9909138942

• Binary: 1001001110101000010111010111111110₂
• Hexadecimal: 0x24EA175FE
• Base-36: 4JVN8JI

Squares and roots of 9909138942

• 9909138942 squared (9909138942²) is 98191034571860879364
• 9909138942 cubed (9909138942³) is 972988604431294937112176592888
• The square root of 9909138942 is 99544.6580284447
• The cube root of 9909138942 is 2147.8896864481

Scales and comparisons

• 9,909,138,942 seconds is equal to 315 years, 4 weeks, 1 day, 2 hours, 35 minutes, 42 seconds.
• To count from 1 to 9,909,138,942 would take you about six hundred thirty 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 9909138942 cubic inches would be around 179 feet tall.

Recreational maths with 9909138942

• 9909138942 backwards is 2498319099
• 9909138942 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 9909138942's digits is 54
• More coming soon!