# 9900

## 9,900 is an even composite number composed of four prime numbers multiplied together.

What does the number 9900 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 54 divisors.

9900 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of fifty-four divisors.

## Prime factorization of 9900:

### 22 × 32 × 52 × 11

(2 × 2 × 3 × 3 × 5 × 5 × 11)

See below for interesting mathematical facts about the number 9900 from the Numbermatics database.

### Names of 9900

• Cardinal: 9900 can be written as Nine thousand, nine hundred.

### Scientific notation

• Scientific notation: 9.9 × 103

### Factors of 9900

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 21

### Divisors of 9900

• Number of divisors d(n): 54
• Complete list of divisors:
• Sum of all divisors σ(n): 33852
• Sum of proper divisors (its aliquot sum) s(n): 23952
• 9900 is an abundant number, because the sum of its proper divisors (23952) is greater than itself. Its abundance is 14052

### Bases of 9900

• Binary: 100110101011002
• Base-36: 7N0

### Squares and roots of 9900

• 9900 squared (99002) is 98010000
• 9900 cubed (99003) is 970299000000
• The square root of 9900 is 99.4987437105
• The cube root of 9900 is 21.4722916901

### Scales and comparisons

How big is 9900?
• 9,900 seconds is equal to 2 hours, 45 minutes.
• To count from 1 to 9,900 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 9900 cubic inches would be around 1.8 feet tall.

### Recreational maths with 9900

• 9900 backwards is 0099
• 9900 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 9900's digits is 18
• More coming soon!

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The information we have on file for 9900 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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