3940021

Names of 3940021

• Cardinal: 3940021 can be written as Three million, nine hundred forty thousand and twenty-one.

Scientific notation

• Scientific notation: 3.940021 × 10⁶

Factors of 3940021

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 3940021

Divisors of 3940021

• Number of divisors d(n): 2
• Complete list of divisors:
  1 3940021
• Sum of all divisors σ(n): 3940022
• Sum of proper divisors (its aliquot sum) s(n): 1
• 3940021 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 3940020

Bases of 3940021

• Binary: 1111000001111010110101₂
• Hexadecimal: 0x3C1EB5
• Base-36: 2CG51

Squares and roots of 3940021

• 3940021 squared (3940021²) is 15523765480441
• 3940021 cubed (3940021³) is 61163961992012629261
• The square root of 3940021 is 1984.9486139445
• The cube root of 3940021 is 157.9426833709

Scales and comparisons

• 3,940,021 seconds is equal to 6 weeks, 3 days, 14 hours, 27 minutes, 1 second.
• To count from 1 to 3,940,021 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 3940021 cubic inches would be around 13.2 feet tall.

Recreational maths with 3940021

• 3940021 backwards is 1200493
• The number of decimal digits it has is: 7
• The sum of 3940021's digits is 19
• More coming soon!