900 in Roman Numerals
CM
900 in Roman numerals is CM, and is spelled nine hundred.
How to write 900 in Roman numerals
900 is written as CM.
The numeral CM is read from left to right, from the largest value to the smallest, adding each symbol as you go. It uses subtractive notation — CM — where a smaller symbol placed before a larger one is subtracted rather than added (for example, CM means 1,000 − 100 = 900).
| Value | Roman |
|---|---|
| 900 | CM |
| 900 | CM |
Facts about the number 900
- 900 is an even number.
- 900 is a composite number. Its prime factorization is 22 × 32 × 52.
- The digits of 900 add up to 9.
- 900 has 27 divisors.
- 900 is a perfect square (302).
900 in other number systems
| Decimal | 900 |
| Roman | CM |
| Binary | 1110000100 |
| Octal | 1604 |
| Hexadecimal | 384 |
Frequently asked questions
How do you write 900 in Roman numerals?
900 is written as CM in Roman numerals.
What does the Roman numeral CM mean?
CM represents the number 900 (nine hundred).
Is 900 a prime number?
No, 900 is a composite number.
What is 900 in binary and hexadecimal?
900 is 1110000100 in binary and 384 in hexadecimal.
Related numbers
Or open 900 in the converter and browse the full Roman numerals chart.