The number 2479
2479 is a composite number with 4 divisors. Its prime factorisation is 37 × 67. Divisors (4): 1, 37, 67, 2479.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 2479: a semiprime: 37 × 67, the product of two primes.
- 2
2479 is composite. Its prime factorisation is
- 3
The divisors add up to 2584; without 2479 itself that is 105, so 2479 is deficient (105 is less than 2479). Euler's totient φ(2479) = 2376 numbers up to 2479 share no factor with it.
- 4
The digits of 2479 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 45 steps to reach 1.
LaTeX source of the formulas on this page
\[ 2479 = 37 \times 67 \]
2479 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 2584 |
| Euler totient φ(n) | 2376 |
| Square | 6145441 |
| Cube | 15234548239 |
| Square root | 49.789557 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 45 |
| Scientific notation | 2.479 × |
2479 in other forms
| Form | Value |
|---|---|
| In words | two thousand four hundred and seventy-nine |
| Roman numerals | MMCDLXXIX |
| Binary (base 2) | 100110101111 |
| Octal (base 8) | 4657 |
| Hexadecimal (base 16) | 9AF |
| Base 3 | 10101211 |
| As time | 2479 seconds = 41 min 19 s |
Is 2479 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 2479 a prime number?
No. 2479 = 37 × 67, so it is divisible by 37.
What are the factors of 2479?
1, 37, 67, 2479.
What is 2479 in binary?
100110101111 (hexadecimal 9AF, octal 4657).
What is the square root of 2479?
About 49.7896.
What is 2479 in Roman numerals?
MMCDLXXIX.
Is 2479 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 2479?
2479 is a semiprime: 37 × 67, the product of two primes.