1089

Names of 1089

• Cardinal: 1089 can be written as One thousand and eighty-nine.

Scientific notation

• Scientific notation: 1.089 × 10³

Factors of 1089

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 14

Divisors of 1089

• Number of divisors d(n): 9
• Complete list of divisors:
  1 3 9 11 33 99 121 363 1089
• Sum of all divisors σ(n): 1729
• Sum of proper divisors (its aliquot sum) s(n): 640
• 1089 is a deficient number, because the sum of its proper divisors (640) is less than itself. Its deficiency is 449

Bases of 1089

• Binary: 10001000001₂
• Hexadecimal: 0x441
• Base-36: U9

Squares and roots of 1089

• 1089 squared (1089²) is 1185921
• 1089 cubed (1089³) is 1291467969
• 1089 is a perfect square number. Its square root is 33
• The cube root of 1089 is 10.2882764781

Scales and comparisons

• 1,089 seconds is equal to 18 minutes, 9 seconds.
• To count from 1 to 1,089 would take you about eighteen minutes.

  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 1089 cubic inches would be around 0.9 feet tall.

Recreational maths with 1089

• 1089 backwards is 9801
• The number of decimal digits it has is: 4
• The sum of 1089's digits is 18
• More coming soon!