397

Names of 397

• Cardinal: 397 can be written as Three hundred ninety-seven.

Scientific notation

• Scientific notation: 3.97 × 10²

Factors of 397

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 397

Divisors of 397

• Number of divisors d(n): 2
• Complete list of divisors:
  1 397
• Sum of all divisors σ(n): 398
• Sum of proper divisors (its aliquot sum) s(n): 1
• 397 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 396

Bases of 397

• Binary: 110001101₂
• Hexadecimal: 0x18D
• Base-36: B1

Squares and roots of 397

• 397 squared (397²) is 157609
• 397 cubed (397³) is 62570773
• The square root of 397 is 19.9248588451
• The cube root of 397 is 7.3495965965

Scales and comparisons

• 397 seconds is equal to 6 minutes, 37 seconds.
• To count from 1 to 397 would take you about three 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 397 cubic inches would be around 0.6 feet tall.

Recreational maths with 397

• 397 backwards is 793
• The number of decimal digits it has is: 3
• The sum of 397's digits is 19
• More coming soon!