1309

Names of 1309

• Cardinal: 1309 can be written as One thousand, three hundred nine.

Scientific notation

• Scientific notation: 1.309 × 10³

Factors of 1309

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 35

Divisors of 1309

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 11 17 77 119 187 1309
• Sum of all divisors σ(n): 1728
• Sum of proper divisors (its aliquot sum) s(n): 419
• 1309 is a deficient number, because the sum of its proper divisors (419) is less than itself. Its deficiency is 890

Bases of 1309

• Binary: 10100011101₂
• Hexadecimal: 0x51D
• Base-36: 10D

Squares and roots of 1309

• 1309 squared (1309²) is 1713481
• 1309 cubed (1309³) is 2242946629
• The square root of 1309 is 36.1801050301
• The cube root of 1309 is 10.9390569213

Scales and comparisons

• 1,309 seconds is equal to 21 minutes, 49 seconds.
• To count from 1 to 1,309 would take you about twenty-one 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 1309 cubic inches would be around 0.9 feet tall.

Recreational maths with 1309

• 1309 backwards is 9031
• The number of decimal digits it has is: 4
• The sum of 1309's digits is 13
• More coming soon!