The number 4979
4979 is a composite number with 4 divisors. Its prime factorisation is 13 × 383. Divisors (4): 1, 13, 383, 4979.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 4979: a semiprime: 13 × 383, the product of two primes.
- 2
4979 is composite. Its prime factorisation is
- 3
The divisors add up to 5376; without 4979 itself that is 397, so 4979 is deficient (397 is less than 4979). Euler's totient φ(4979) = 4584 numbers up to 4979 share no factor with it.
- 4
The digits of 4979 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 41 steps to reach 1.
LaTeX source of the formulas on this page
\[ 4979 = 13 \times 383 \]
4979 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 5376 |
| Euler totient φ(n) | 4584 |
| Square | 24790441 |
| Cube | 123431605739 |
| Square root | 70.562029 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 41 |
| Scientific notation | 4.979 × |
4979 in other forms
| Form | Value |
|---|---|
| In words | four thousand nine hundred and seventy-nine |
| Binary (base 2) | 1001101110011 |
| Octal (base 8) | 11563 |
| Hexadecimal (base 16) | 1373 |
| Base 3 | 20211102 |
| As time | 4979 seconds = 1 h 22 min 59 s |
Is 4979 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 2) | 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 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 4979 a prime number?
No. 4979 = 13 × 383, so it is divisible by 13.
What are the factors of 4979?
1, 13, 383, 4979.
What is 4979 in binary?
1001101110011 (hexadecimal 1373, octal 11563).
What is the square root of 4979?
About 70.5620.
Is 4979 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 4979?
4979 is a semiprime: 13 × 383, the product of two primes.