429 in Roman Numerals
429 in Roman numerals is CDXXIX, and is spelled four hundred twenty-nine.
How to write 429 in Roman numerals
To write 429 in Roman numerals, combine CD (400), XX (20) and IX (9) to get CDXXIX.
The numeral CDXXIX is read from left to right, from the largest value to the smallest, adding each symbol as you go. It uses subtractive notation — IX and CD — where a smaller symbol placed before a larger one is subtracted rather than added (for example, IX means 10 − 1 = 9).
| Value | Roman |
|---|---|
| 400 | CD |
| 20 | XX |
| 9 | IX |
| 429 | CDXXIX |
Facts about the number 429
- 429 is an odd number.
- 429 is a composite number. Its prime factorization is 3 × 11 × 13.
- The digits of 429 add up to 15.
- 429 has 8 divisors.
429 in other number systems
| Decimal | 429 |
| Roman | CDXXIX |
| Binary | 110101101 |
| Octal | 655 |
| Hexadecimal | 1AD |
Frequently asked questions
How do you write 429 in Roman numerals?
429 is written as CDXXIX in Roman numerals.
What does the Roman numeral CDXXIX mean?
CDXXIX represents the number 429 (four hundred twenty-nine).
Is 429 a prime number?
No, 429 is a composite number.
What is 429 in binary and hexadecimal?
429 is 110101101 in binary and 1AD in hexadecimal.
Related numbers
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