408 in words
408
four hundred and eight
408 is written four hundred and eight.
Ways to write it
- As an ordinal
- four hundred and eighth
- Roman numeral
- CDVIII
- Expanded form
- 400 + 8
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 4 | 400 |
| tens | 0 | 0 |
| ones | 8 | 8 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204 and 408 (16 factors)
- First 10 multiples
- 408, 816, 1,224, 1,632, 2,040, 2,448, 2,856, 3,264, 3,672, 4,080
- Square
- 408 × 408 = 1,66,464
- Square root
- ≈ 20.20
- Sum of the digits
- 4 + 0 + 8 = 12
- Rounded to the nearest 10
- 410
- Rounded to the nearest 100
- 400
- Number before
- 407
- Number after
- 409
- In binary
110011000
Quick check
What number comes just after 408?
Show the answer
409
Is 408 even or odd?
Show the answer
Even
What is 408 + 10?
Show the answer
418
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 408 in words?
408 is written "four hundred and eight".
Is 408 a prime number?
No. 408 is a composite number, because it has more than two factors.
What are the factors of 408?
The factors of 408 are 1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204 and 408.
How do you write 408 in Roman numerals?
408 in Roman numerals is CDVIII.