998

998 is an even composite number composed of two prime numbers multiplied together.

What does the number 998 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

998 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 998:

2 × 499

See below for interesting mathematical facts about the number 998 from the Numbermatics database.

Names of 998

Cardinal: 998 can be written as Nine hundred ninety-eight.

Scientific notation

Scientific notation: 9.98 × 10²

Factors of 998

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 501

Divisors of 998

Number of divisors d(n): 4
Complete list of divisors:
1 2 499 998
Sum of all divisors σ(n): 1500
Sum of proper divisors (its aliquot sum) s(n): 502
998 is a deficient number, because the sum of its proper divisors (502) is less than itself. Its deficiency is 496

Bases of 998

Binary: 1111100110₂
Hexadecimal: 0x3E6
Base-36: RQ

Squares and roots of 998

998 squared (998²) is 996004
998 cubed (998³) is 994011992
The square root of 998 is 31.5911379981
The cube root of 998 is 9.9933288839

Scales and comparisons

How big is 998?

998 seconds is equal to 16 minutes, 38 seconds.
To count from 1 to 998 would take you about eight 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 998 cubic inches would be around 0.8 feet tall.

Recreational maths with 998

998 backwards is 899
The number of decimal digits it has is: 3
The sum of 998's digits is 26
More coming soon!

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The information we have on file for 998 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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