19939

Names of 19939

• Cardinal: 19939 can be written as Nineteen thousand, nine hundred thirty-nine.

Scientific notation

• Scientific notation: 1.9939 × 10⁴

Factors of 19939

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 284

Divisors of 19939

• Number of divisors d(n): 4
• Complete list of divisors:
  1 127 157 19939
• Sum of all divisors σ(n): 20224
• Sum of proper divisors (its aliquot sum) s(n): 285
• 19939 is a deficient number, because the sum of its proper divisors (285) is less than itself. Its deficiency is 19654

Bases of 19939

• Binary: 100110111100011₂
• Hexadecimal: 0x4DE3
• Base-36: FDV

Squares and roots of 19939

• 19939 squared (19939²) is 397563721
• 19939 cubed (19939³) is 7927023033019
• The square root of 19939 is 141.2055239713
• The cube root of 19939 is 27.1165514827

Scales and comparisons

• 19,939 seconds is equal to 5 hours, 32 minutes, 19 seconds.
• To count from 1 to 19,939 would take you about five hours.

  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 19939 cubic inches would be around 2.3 feet tall.

Recreational maths with 19939

• 19939 backwards is 93991
• The number of decimal digits it has is: 5
• The sum of 19939's digits is 31
• More coming soon!