The number 49839
49839 is a composite number with 8 divisors. Its prime factorisation is 3 × 37 × 449. Divisors (8): 1, 3, 37, 111, 449, 1347, 16613, 49839.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
49839 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49839 is composite. Its prime factorisation is
- 3
The divisors add up to 68400; without 49839 itself that is 18561, so 49839 is deficient (18561 is less than 49839). Euler's totient φ(49839) = 32256 numbers up to 49839 share no factor with it.
- 4
The digits of 49839 add up to 33, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 96 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49839 = 3 \times 37 \times 449 \]
49839 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 68400 |
| Euler totient φ(n) | 32256 |
| Square | 2483925921 |
| Cube | 123796383976719 |
| Square root | 223.246501 |
| Digit sum / digital root | 33 / 6 |
| Collatz steps to 1 | 96 |
| Scientific notation | 4.9839 × |
49839 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand eight hundred and thirty-nine |
| Binary (base 2) | 1100001010101111 |
| Octal (base 8) | 141257 |
| Hexadecimal (base 16) | C2AF |
| Base 3 | 2112100220 |
| As time | 49839 seconds = 13 h 50 min 39 s |
Is 49839 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 | Yes (49839 ÷ 3 = 16613) | 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 3) | 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 6) | 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 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49839 a prime number?
No. 49839 = 3 × 37 × 449, so it is divisible by 3.
What are the factors of 49839?
1, 3, 37, 111, 449, 1347, 16613, 49839.
What is 49839 in binary?
1100001010101111 (hexadecimal C2AF, octal 141257).
What is the square root of 49839?
About 223.2465.
Is 49839 divisible by 3?
Yes. Its digits add up to 33, a multiple of 3.
What is special about the number 49839?
It is a composite number with 8 divisors.