397 in words
397
three hundred ninety-seven
397 is written three hundred ninety-seven.
Ways to write it
- As an ordinal
- three hundred ninety-seventh
- Roman numeral
- CCCXCVII
- Expanded form
- 300 + 90 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 3 | 300 |
| tens | 9 | 90 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 397 (2 factors)
- First 10 multiples
- 397, 794, 1,191, 1,588, 1,985, 2,382, 2,779, 3,176, 3,573, 3,970
- Square
- 397 × 397 = 157,609
- Square root
- ≈ 19.92
- Sum of the digits
- 3 + 9 + 7 = 19
- Rounded to the nearest 10
- 400
- Rounded to the nearest 100
- 400
- Number before
- 396
- Number after
- 398
- In binary
110001101
Quick check
What number comes just after 397?
Show the answer
398
Is 397 even or odd?
Show the answer
Odd
What is 397 + 10?
Show the answer
407
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 397 in words?
397 is written "three hundred ninety-seven".
Is 397 a prime number?
Yes. 397 is a prime number: its only factors are 1 and 397.
What are the factors of 397?
The factors of 397 are 1 and 397.
How do you write 397 in Roman numerals?
397 in Roman numerals is CCCXCVII.