The number 39849
39849 is a composite number with 8 divisors. Its prime factorisation is 3 × 37 × 359. Divisors (8): 1, 3, 37, 111, 359, 1077, 13283, 39849.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
39849 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
39849 is composite. Its prime factorisation is
- 3
The divisors add up to 54720; without 39849 itself that is 14871, so 39849 is deficient (14871 is less than 39849). Euler's totient φ(39849) = 25776 numbers up to 39849 share no factor with it.
- 4
The digits of 39849 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 119 steps to reach 1.
LaTeX source of the formulas on this page
\[ 39849 = 3 \times 37 \times 359 \]
39849 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 54720 |
| Euler totient φ(n) | 25776 |
| Square | 1587942801 |
| Cube | 63277932677049 |
| Square root | 199.622143 |
| Digit sum / digital root | 33 / 6 |
| Collatz steps to 1 | 119 |
| Scientific notation | 3.9849 × |
39849 in other forms
| Form | Value |
|---|---|
| In words | thirty-nine thousand eight hundred and forty-nine |
| Binary (base 2) | 1001101110101001 |
| Octal (base 8) | 115651 |
| Hexadecimal (base 16) | 9BA9 |
| Base 3 | 2000122220 |
| As time | 39849 seconds = 11 h 4 min 9 s |
Is 39849 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 (39849 ÷ 3 = 13283) | 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 | 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 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 1) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 39849 a prime number?
No. 39849 = 3 × 37 × 359, so it is divisible by 3.
What are the factors of 39849?
1, 3, 37, 111, 359, 1077, 13283, 39849.
What is 39849 in binary?
1001101110101001 (hexadecimal 9BA9, octal 115651).
What is the square root of 39849?
About 199.6221.
Is 39849 divisible by 3?
Yes. Its digits add up to 33, a multiple of 3.
What is special about the number 39849?
It is a composite number with 8 divisors.