429 in Words
How do you write 429 in words?
The number 429 is written four hundred twenty-nine in words. As an ordinal it is four hundred twenty-ninth, and on a check you would write Four hundred twenty-nine and 00/100.
Last updated 24 August 2026
Other ways to write it
| Cardinal | four hundred twenty-nine |
|---|---|
| Ordinal | four hundred twenty-ninth |
| Currency | four hundred twenty-nine dollars |
| Check format | Four hundred twenty-nine and 00/100 |
How 429 is written
429 is the sum of its place values, 400 + 20 + 9, and is written four hundred twenty-nine.
Its ordinal form is four hundred twenty-ninth — only the final element takes the ordinal ending — and on a check the amount line reads "Four hundred twenty-nine and 00/100", where 00/100 stands for zero cents.
British English inserts "and" before the last part, giving four hundred and twenty-nine, where American English writes four hundred twenty-nine without it.
Its Roman numeral CDXXIX uses subtractive notation: CD means 400, written as C before D instead of repeating C.
For house-style rules on spelling out numbers, see the Chicago Manual of Style.
Facts about 429
- 429 is an odd number.
- It is not a prime number.
- Digit sum: 15.
- Roman numerals: CDXXIX.
- Binary: 110101101.
- Hexadecimal: 1AD.
| Digit | Place |
|---|---|
| 4 | hundreds |
| 2 | tens |
| 9 | ones |
Try another number
Frequently asked questions
How do you write 429 in words?
429 in words is "four hundred twenty-nine".
How do you spell 429?
429 is spelled "four hundred twenty-nine".
How do you write 429 on a check?
On a check, write "Four hundred twenty-nine and 00/100".