139 in words
139
one hundred thirty-nine
139 is written one hundred thirty-nine.
Ways to write it
- As an ordinal
- one hundred thirty-ninth
- Roman numeral
- CXXXIX
- Expanded form
- 100 + 30 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 1 | 100 |
| tens | 3 | 30 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 139 (2 factors)
- First 10 multiples
- 139, 278, 417, 556, 695, 834, 973, 1,112, 1,251, 1,390
- Square
- 139 × 139 = 19,321
- Square root
- ≈ 11.79
- Sum of the digits
- 1 + 3 + 9 = 13
- Rounded to the nearest 10
- 140
- Rounded to the nearest 100
- 100
- Number before
- 138
- Number after
- 140
- In binary
10001011
Quick check
What number comes just after 139?
Show the answer
140
Is 139 even or odd?
Show the answer
Odd
What is 139 + 10?
Show the answer
149
Practice with a game
Times Tables Challenge
Practice any times table from 2× to 12×.
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.Frequently asked questions
How do you write 139 in words?
139 is written "one hundred thirty-nine".
Is 139 a prime number?
Yes. 139 is a prime number: its only factors are 1 and 139.
What are the factors of 139?
The factors of 139 are 1 and 139.
How do you write 139 in Roman numerals?
139 in Roman numerals is CXXXIX.