9990143809

Names of 9990143809

• Cardinal: 9990143809 can be written as Nine billion, nine hundred ninety million, one hundred forty-three thousand, eight hundred nine.

Scientific notation

• Scientific notation: 9.990143809 × 10⁹

Factors of 9990143809

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1040770

Divisors of 9990143809

• Number of divisors d(n): 4
• Complete list of divisors:
  1 9689 1031081 9990143809
• Sum of all divisors σ(n): 9991184580
• Sum of proper divisors (its aliquot sum) s(n): 1040771
• 9990143809 is a deficient number, because the sum of its proper divisors (1040771) is less than itself. Its deficiency is 9989103038

Bases of 9990143809

• Binary: 1001010011011101010111111101000001₂
• Hexadecimal: 0x253757F41
• Base-36: 4L7VGAP

Squares and roots of 9990143809

• 9990143809 squared (9990143809²) is 99802973324501028481
• 9990143809 cubed (9990143809³) is 997046056077556097693594824129
• The square root of 9990143809 is 99950.7068959495
• The cube root of 9990143809 is 2153.7266400317

Scales and comparisons

• 9,990,143,809 seconds is equal to 317 years, 34 weeks, 15 hours, 56 minutes, 49 seconds.
• To count from 1 to 9,990,143,809 would take you about six hundred thirty-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 9990143809 cubic inches would be around 179.5 feet tall.

Recreational maths with 9990143809

• 9990143809 backwards is 9083410999
• The number of decimal digits it has is: 10
• The sum of 9990143809's digits is 52
• More coming soon!