# 109

## 109 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 109 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

109 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 109:

### 109

See below for interesting mathematical facts about the number 109 from the Numbermatics database.

### Names of 109

• Cardinal: 109 can be written as One hundred nine.

### Scientific notation

• Scientific notation: 1.09 × 102

### Factors of 109

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 109

### Divisors of 109

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 110
• Sum of proper divisors (its aliquot sum) s(n): 1
• 109 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 108

### Bases of 109

• Binary: 11011012
• Base-36: 31

### Squares and roots of 109

• 109 squared (1092) is 11881
• 109 cubed (1093) is 1295029
• The square root of 109 is 10.4403065089
• The cube root of 109 is 4.7768561811

### Scales and comparisons

How big is 109?
• 109 seconds is equal to 1 minute, 49 seconds.
• To count from 1 to 109 would take you about fifty-four seconds.

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 109 cubic inches would be around 0.4 feet tall.

### Recreational maths with 109

• 109 backwards is 901
• The number of decimal digits it has is: 3
• The sum of 109's digits is 10
• More coming soon!