9901

Names of 9901

• Cardinal: 9901 can be written as Nine thousand, nine hundred one.

Scientific notation

• Scientific notation: 9.901 × 10³

Factors of 9901

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 9901

Divisors of 9901

• Number of divisors d(n): 2
• Complete list of divisors:
  1 9901
• Sum of all divisors σ(n): 9902
• Sum of proper divisors (its aliquot sum) s(n): 1
• 9901 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 9900

Bases of 9901

• Binary: 10011010101101₂
• Hexadecimal: 0x26AD
• Base-36: 7N1

Squares and roots of 9901

• 9901 squared (9901²) is 98029801
• 9901 cubed (9901³) is 970593059701
• The square root of 9901 is 99.5037687729
• The cube root of 9901 is 21.4730146387

Scales and comparisons

• 9,901 seconds is equal to 2 hours, 45 minutes, 1 second.
• To count from 1 to 9,901 would take you about two 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 9901 cubic inches would be around 1.8 feet tall.

Recreational maths with 9901

• 9901 backwards is 1099
• The number of decimal digits it has is: 4
• The sum of 9901's digits is 19
• More coming soon!