The number 39489
39489 is a composite number with 4 divisors. Its prime factorisation is 3 × 13163. Divisors (4): 1, 3, 13163, 39489.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 39489: a semiprime: 3 × 13163, the product of two primes.
- 2
39489 is composite. Its prime factorisation is
- 3
The divisors add up to 52656; without 39489 itself that is 13167, so 39489 is deficient (13167 is less than 39489). Euler's totient φ(39489) = 26324 numbers up to 39489 share no factor with it.
- 4
The digits of 39489 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 137 steps to reach 1.
LaTeX source of the formulas on this page
\[ 39489 = 3 \times 13163 \]
39489 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 52656 |
| Euler totient φ(n) | 26324 |
| Square | 1559381121 |
| Cube | 61578401087169 |
| Square root | 198.718394 |
| Digit sum / digital root | 33 / 6 |
| Collatz steps to 1 | 137 |
| Scientific notation | 3.9489 × |
39489 in other forms
| Form | Value |
|---|---|
| In words | thirty-nine thousand four hundred and eighty-nine |
| Binary (base 2) | 1001101001000001 |
| Octal (base 8) | 115101 |
| Hexadecimal (base 16) | 9A41 |
| Base 3 | 2000011120 |
| As time | 39489 seconds = 10 h 58 min 9 s |
Is 39489 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 (39489 ÷ 3 = 13163) | 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 2) | 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 10) | 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 39489 a prime number?
No. 39489 = 3 × 13163, so it is divisible by 3.
What are the factors of 39489?
1, 3, 13163, 39489.
What is 39489 in binary?
1001101001000001 (hexadecimal 9A41, octal 115101).
What is the square root of 39489?
About 198.7184.
Is 39489 divisible by 3?
Yes. Its digits add up to 33, a multiple of 3.
What is special about the number 39489?
39489 is a semiprime: 3 × 13163, the product of two primes.