3998391

Names of 3998391

• Cardinal: 3998391 can be written as Three million, nine hundred ninety-eight thousand, three hundred ninety-one.

Scientific notation

• Scientific notation: 3.998391 × 10⁶

Factors of 3998391

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1332800

Divisors of 3998391

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 1332797 3998391
• Sum of all divisors σ(n): 5331192
• Sum of proper divisors (its aliquot sum) s(n): 1332801
• 3998391 is a deficient number, because the sum of its proper divisors (1332801) is less than itself. Its deficiency is 2665590

Bases of 3998391

• Binary: 1111010000001010110111₂
• Hexadecimal: 0x3D02B7
• Base-36: 2DP6F

Squares and roots of 3998391

• 3998391 squared (3998391²) is 15987130588881
• 3998391 cubed (3998391³) is 63922799062406490471
• The square root of 3998391 is 1999.5977095405
• The cube root of 3998391 is 158.7188179399

Scales and comparisons

• 3,998,391 seconds is equal to 6 weeks, 4 days, 6 hours, 39 minutes, 51 seconds.
• To count from 1 to 3,998,391 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 3998391 cubic inches would be around 13.2 feet tall.

Recreational maths with 3998391

• 3998391 backwards is 1938993
• The number of decimal digits it has is: 7
• The sum of 3998391's digits is 42
• More coming soon!