79 in Roman Numerals
79 in Roman numerals is LXXIX, and is spelled seventy-nine.
How to write 79 in Roman numerals
To write 79 in Roman numerals, combine LXX (70) and IX (9) to get LXXIX.
The numeral LXXIX is read from left to right, from the largest value to the smallest, adding each symbol as you go. It uses subtractive notation — IX — where a smaller symbol placed before a larger one is subtracted rather than added (for example, IX means 10 − 1 = 9).
| Value | Roman |
|---|---|
| 70 | LXX |
| 9 | IX |
| 79 | LXXIX |
Facts about the number 79
- 79 is an odd number.
- 79 is a prime number: it has no divisors other than 1 and itself.
- The digits of 79 add up to 16.
- 79 has 2 divisors.
79 in other number systems
| Decimal | 79 |
| Roman | LXXIX |
| Binary | 1001111 |
| Octal | 117 |
| Hexadecimal | 4F |
Frequently asked questions
How do you write 79 in Roman numerals?
79 is written as LXXIX in Roman numerals.
What does the Roman numeral LXXIX mean?
LXXIX represents the number 79 (seventy-nine).
Is 79 a prime number?
Yes, 79 is a prime number.
What is 79 in binary and hexadecimal?
79 is 1001111 in binary and 4F in hexadecimal.
Related numbers
Or open 79 in the converter and browse the full Roman numerals chart.