109

Names of 109

• Cardinal: 109 can be written as One hundred nine.

Scientific notation

• Scientific notation: 1.09 × 10²

Factors of 109

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 109

Divisors of 109

• Number of divisors d(n): 2
• Complete list of divisors:
  1 109
• Sum of all divisors σ(n): 110
• Sum of proper divisors (its aliquot sum) s(n): 1
• 109 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 108

Bases of 109

• Binary: 1101101₂
• Hexadecimal: 0x6D
• Base-36: 31

Squares and roots of 109

• 109 squared (109²) is 11881
• 109 cubed (109³) is 1295029
• The square root of 109 is 10.4403065089
• The cube root of 109 is 4.7768561811

Scales and comparisons

• 109 seconds is equal to 1 minute, 49 seconds.
• To count from 1 to 109 would take you about fifty-four seconds.

  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 109 cubic inches would be around 0.4 feet tall.

Recreational maths with 109

• 109 backwards is 901
• The number of decimal digits it has is: 3
• The sum of 109's digits is 10
• More coming soon!