389450985

Names of 389450985

• Cardinal: 389450985 can be written as Three hundred eighty-nine million, four hundred fifty thousand, nine hundred eighty-five.

Scientific notation

• Scientific notation: 3.89450985 × 10⁸

Factors of 389450985

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 279

Divisors of 389450985

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 7 11 15 21 31 33 35 55 73 77 93 105 149 155 165 217 219 231 341 365 385 447 465 511 651 745 803 1023 1043 1085 1095 1155 1533 1639 1705 2235 2263 2387 2409 2555 3129 3255 4015 4619 4917 5115 5215 5621 6789 7161 7665 8195 10877 11315 11473 11935 12045 13857 15645 15841 16863 23095 24585 24893 28105 32333 32631 33945 34419 35805 47523 50809 54385 57365 69285 74679 76139 79205 84315 96999 119647 124465 152427 161665 163155 172095 174251 228417 237615 254045 337187 355663 358941 373395 380695 484995 522753 598235 762135 837529 871255 1011561 1066989 1142085 1685935 1778315 1794705 2360309 2512587 2613765 3709057 4187645 5057805 5334945 7080927 11127171 11801545 12562935 18545285 25963399 35404635 55635855 77890197 129816995 389450985
• Sum of all divisors σ(n): 818380800
• Sum of proper divisors (its aliquot sum) s(n): 428929815
• 389450985 is an abundant number, because the sum of its proper divisors (428929815) is greater than itself. Its abundance is 39478830

Bases of 389450985

• Binary: 10111001101101000110011101001₂
• Hexadecimal: 0x17368CE9
• Base-36: 6FVAAX

Squares and roots of 389450985

• 389450985 squared (389450985²) is 151672069717470225
• 389450985 cubed (389450985³) is 59068836948457450834421625
• The square root of 389450985 is 19734.5125351501
• The cube root of 389450985 is 730.2713603029

Scales and comparisons

• 389,450,985 seconds is equal to 12 years, 19 weeks, 6 days, 12 hours, 49 minutes, 45 seconds.
• To count from 1 to 389,450,985 would take you about eighteen 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 389450985 cubic inches would be around 60.9 feet tall.

Recreational maths with 389450985

• 389450985 backwards is 589054983
• The number of decimal digits it has is: 9
• The sum of 389450985's digits is 51
• More coming soon!