3921221

Names of 3921221

• Cardinal: 3921221 can be written as Three million, nine hundred twenty-one thousand, two hundred twenty-one.

Scientific notation

• Scientific notation: 3.921221 × 10⁶

Factors of 3921221

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 126522

Divisors of 3921221

• Number of divisors d(n): 4
• Complete list of divisors:
  1 31 126491 3921221
• Sum of all divisors σ(n): 4047744
• Sum of proper divisors (its aliquot sum) s(n): 126523
• 3921221 is a deficient number, because the sum of its proper divisors (126523) is less than itself. Its deficiency is 3794698

Bases of 3921221

• Binary: 1110111101010101000101₂
• Hexadecimal: 0x3BD545
• Base-36: 2C1MT

Squares and roots of 3921221

• 3921221 squared (3921221²) is 15375974130841
• 3921221 cubed (3921221³) is 60292592657310476861
• The square root of 3921221 is 1980.2073123791
• The cube root of 3921221 is 157.6910723801

Scales and comparisons

• 3,921,221 seconds is equal to 6 weeks, 3 days, 9 hours, 13 minutes, 41 seconds.
• To count from 1 to 3,921,221 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 3921221 cubic inches would be around 13.1 feet tall.

Recreational maths with 3921221

• 3921221 backwards is 1221293
• The number of decimal digits it has is: 7
• The sum of 3921221's digits is 20
• More coming soon!