The number 47879
47879 is a composite number with 8 divisors. Its prime factorisation is 13 × 29 × 127. Divisors (8): 1, 13, 29, 127, 377, 1651, 3683, 47879.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47879 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47879 is composite. Its prime factorisation is
- 3
The divisors add up to 53760; without 47879 itself that is 5881, so 47879 is deficient (5881 is less than 47879). Euler's totient φ(47879) = 42336 numbers up to 47879 share no factor with it.
- 4
The digits of 47879 add up to 35, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47879 = 13 \times 29 \times 127 \]
47879 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 53760 |
| Euler totient φ(n) | 42336 |
| Square | 2292398641 |
| Cube | 109757754532439 |
| Square root | 218.812705 |
| Digit sum / digital root | 35 / 8 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.7879 × |
47879 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand eight hundred and seventy-nine |
| Binary (base 2) | 1011101100000111 |
| Octal (base 8) | 135407 |
| Hexadecimal (base 16) | BB07 |
| Base 3 | 2102200022 |
| As time | 47879 seconds = 13 h 17 min 59 s |
Is 47879 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 6) | 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 8) | 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 47879 a prime number?
No. 47879 = 13 × 29 × 127, so it is divisible by 13.
What are the factors of 47879?
1, 13, 29, 127, 377, 1651, 3683, 47879.
What is 47879 in binary?
1011101100000111 (hexadecimal BB07, octal 135407).
What is the square root of 47879?
About 218.8127.
Is 47879 divisible by 3?
No. Its digits add up to 35, which is not a multiple of 3.
What is special about the number 47879?
It is a composite number with 8 divisors.