The number 36989
36989 is a composite number with 4 divisors. Its prime factorisation is 47 × 787. Divisors (4): 1, 47, 787, 36989.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 36989: a semiprime: 47 × 787, the product of two primes.
- 2
36989 is composite. Its prime factorisation is
- 3
The divisors add up to 37824; without 36989 itself that is 835, so 36989 is deficient (835 is less than 36989). Euler's totient φ(36989) = 36156 numbers up to 36989 share no factor with it.
- 4
The digits of 36989 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 186 steps to reach 1.
LaTeX source of the formulas on this page
\[ 36989 = 47 \times 787 \]
36989 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 37824 |
| Euler totient φ(n) | 36156 |
| Square | 1368186121 |
| Cube | 50607836429669 |
| Square root | 192.325245 |
| Digit sum / digital root | 35 / 8 |
| Collatz steps to 1 | 186 |
| Scientific notation | 3.6989 × |
36989 in other forms
| Form | Value |
|---|---|
| In words | thirty-six thousand nine hundred and eighty-nine |
| Binary (base 2) | 1001000001111101 |
| Octal (base 8) | 110175 |
| Hexadecimal (base 16) | 907D |
| Base 3 | 1212201222 |
| As time | 36989 seconds = 10 h 16 min 29 s |
Is 36989 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 | 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 1) | 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 5) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 36989 a prime number?
No. 36989 = 47 × 787, so it is divisible by 47.
What are the factors of 36989?
1, 47, 787, 36989.
What is 36989 in binary?
1001000001111101 (hexadecimal 907D, octal 110175).
What is the square root of 36989?
About 192.3252.
Is 36989 divisible by 3?
No. Its digits add up to 35, which is not a multiple of 3.
What is special about the number 36989?
36989 is a semiprime: 47 × 787, the product of two primes.