3997981

Names of 3997981

• Cardinal: 3997981 can be written as Three million, nine hundred ninety-seven thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 3.997981 × 10⁶

Factors of 3997981

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 307550

Divisors of 3997981

• Number of divisors d(n): 4
• Complete list of divisors:
  1 13 307537 3997981
• Sum of all divisors σ(n): 4305532
• Sum of proper divisors (its aliquot sum) s(n): 307551
• 3997981 is a deficient number, because the sum of its proper divisors (307551) is less than itself. Its deficiency is 3690430

Bases of 3997981

• Binary: 1111010000000100011101₂
• Hexadecimal: 0x3D011D
• Base-36: 2DOV1

Squares and roots of 3997981

• 3997981 squared (3997981²) is 15983852076361
• 3997981 cubed (3997981³) is 63903136908101827141
• The square root of 3997981 is 1999.4951862907
• The cube root of 3997981 is 158.7133926793

Scales and comparisons

• 3,997,981 seconds is equal to 6 weeks, 4 days, 6 hours, 33 minutes, 1 second.
• To count from 1 to 3,997,981 would take you about nine weeks!

  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 3997981 cubic inches would be around 13.2 feet tall.

Recreational maths with 3997981

• 3997981 backwards is 1897993
• The number of decimal digits it has is: 7
• The sum of 3997981's digits is 46
• More coming soon!