The number 49385
49385 is a composite number with 16 divisors. Its prime factorisation is 5 × 7 × 17 × 83. Divisors (16): 1, 5, 7, 17, 35, 83, 85, 119, 415, 581, 595, 1411, 2905, 7055, 9877, 49385.
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How to work it out
- 1
49385 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49385 is composite. Its prime factorisation is
- 3
The divisors add up to 72576; without 49385 itself that is 23191, so 49385 is deficient (23191 is less than 49385). Euler's totient φ(49385) = 31488 numbers up to 49385 share no factor with it.
- 4
The digits of 49385 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 158 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49385 = 5 \times 7 \times 17 \times 83 \]
49385 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 72576 |
| Euler totient φ(n) | 31488 |
| Square | 2438878225 |
| Cube | 120444001141625 |
| Square root | 222.227361 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 158 |
| Scientific notation | 4.9385 × |
49385 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand three hundred and eighty-five |
| Binary (base 2) | 1100000011101001 |
| Octal (base 8) | 140351 |
| Hexadecimal (base 16) | C0E9 |
| Base 3 | 2111202002 |
| As time | 49385 seconds = 13 h 43 min 5 s |
Is 49385 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (49385 ÷ 5 = 9877) | 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 | Yes (49385 ÷ 7 = 7055) | 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 1) | 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 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49385 a prime number?
No. 49385 = 5 × 7 × 17 × 83, so it is divisible by 5.
What are the factors of 49385?
1, 5, 7, 17, 35, 83, 85, 119, 415, 581, 595, 1411, 2905, 7055, 9877, 49385.
What is 49385 in binary?
1100000011101001 (hexadecimal C0E9, octal 140351).
What is the square root of 49385?
About 222.2274.
Is 49385 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 49385?
It is a composite number with 16 divisors.