The number 48739
48739 is a composite number with 8 divisors. Its prime factorisation is 17 × 47 × 61. Divisors (8): 1, 17, 47, 61, 799, 1037, 2867, 48739.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 48739: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
48739 is composite. Its prime factorisation is
- 3
The divisors add up to 53568; without 48739 itself that is 4829, so 48739 is deficient (4829 is less than 48739). Euler's totient φ(48739) = 44160 numbers up to 48739 share no factor with it.
- 4
The digits of 48739 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 48739 = 17 \times 47 \times 61 \]
48739 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 53568 |
| Euler totient φ(n) | 44160 |
| Square | 2375490121 |
| Cube | 115779013007419 |
| Square root | 220.769110 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 39 |
| Scientific notation | 4.8739 × |
48739 in other forms
| Form | Value |
|---|---|
| In words | forty-eight thousand seven hundred and thirty-nine |
| Binary (base 2) | 1011111001100011 |
| Octal (base 8) | 137143 |
| Hexadecimal (base 16) | BE63 |
| Base 3 | 2110212011 |
| As time | 48739 seconds = 13 h 32 min 19 s |
Is 48739 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 5) | 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 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 9) | 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 48739 a prime number?
No. 48739 = 17 × 47 × 61, so it is divisible by 17.
What are the factors of 48739?
1, 17, 47, 61, 799, 1037, 2867, 48739.
What is 48739 in binary?
1011111001100011 (hexadecimal BE63, octal 137143).
What is the square root of 48739?
About 220.7691.
Is 48739 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 48739?
48739 is a happy number: repeatedly adding the squares of its digits reaches 1.