9998

Names of 9998

• Cardinal: 9998 can be written as Nine thousand, nine hundred ninety-eight.

Scientific notation

• Scientific notation: 9.998 × 10³

Factors of 9998

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 5001

Divisors of 9998

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 4999 9998
• Sum of all divisors σ(n): 15000
• Sum of proper divisors (its aliquot sum) s(n): 5002
• 9998 is a deficient number, because the sum of its proper divisors (5002) is less than itself. Its deficiency is 4996

Bases of 9998

• Binary: 10011100001110₂
• Hexadecimal: 0x270E
• Base-36: 7PQ

Squares and roots of 9998

• 9998 squared (9998²) is 99960004
• 9998 cubed (9998³) is 999400119992
• The square root of 9998 is 99.9899994999
• The cube root of 9998 is 21.5429105147

Scales and comparisons

• 9,998 seconds is equal to 2 hours, 46 minutes, 38 seconds.
• To count from 1 to 9,998 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 9998 cubic inches would be around 1.8 feet tall.

Recreational maths with 9998

• 9998 backwards is 8999
• The number of decimal digits it has is: 4
• The sum of 9998's digits is 35
• More coming soon!