# 149

## 149 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 149 look like?

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

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

## Prime factorization of 149:

### 149

See below for interesting mathematical facts about the number 149 from the Numbermatics database.

### Names of 149

• Cardinal: 149 can be written as One hundred forty-nine.

### Scientific notation

• Scientific notation: 1.49 × 102

### Factors of 149

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 149

### Divisors of 149

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 150
• Sum of proper divisors (its aliquot sum) s(n): 1
• 149 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 148

### Bases of 149

• Binary: 100101012
• Base-36: 45

### Squares and roots of 149

• 149 squared (1492) is 22201
• 149 cubed (1493) is 3307949
• The square root of 149 is 12.2065556157
• The cube root of 149 is 5.3014591923

### Scales and comparisons

How big is 149?
• 149 seconds is equal to 2 minutes, 29 seconds.
• To count from 1 to 149 would take you about fourteen 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 149 cubic inches would be around 0.4 feet tall.

### Recreational maths with 149

• 149 backwards is 941
• 149 is a twin prime! Its twin is 151
• The number of decimal digits it has is: 3
• The sum of 149's digits is 14
• More coming soon!