4 in Roman Numerals
IV
4 in Roman numerals is IV, and is spelled four.
How to write 4 in Roman numerals
4 is written as IV.
The numeral IV is read from left to right, from the largest value to the smallest, adding each symbol as you go. It uses subtractive notation — IV — where a smaller symbol placed before a larger one is subtracted rather than added (for example, IV means 5 − 1 = 4).
| Value | Roman |
|---|---|
| 4 | IV |
| 4 | IV |
Facts about the number 4
- 4 is an even number.
- 4 is a composite number. Its prime factorization is 22.
- The digits of 4 add up to 4.
- 4 has 3 divisors.
- 4 is a perfect square (22).
4 in other number systems
| Decimal | 4 |
| Roman | IV |
| Binary | 100 |
| Octal | 4 |
| Hexadecimal | 4 |
Frequently asked questions
How do you write 4 in Roman numerals?
4 is written as IV in Roman numerals.
What does the Roman numeral IV mean?
IV represents the number 4 (four).
Is 4 a prime number?
No, 4 is a composite number.
What is 4 in binary and hexadecimal?
4 is 100 in binary and 4 in hexadecimal.
Related numbers
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