The number 39427
39427 is a composite number with 4 divisors. Its prime factorisation is 89 × 443. Divisors (4): 1, 89, 443, 39427.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 39427: a semiprime: 89 × 443, the product of two primes.
- 2
39427 is composite. Its prime factorisation is
- 3
The divisors add up to 39960; without 39427 itself that is 533, so 39427 is deficient (533 is less than 39427). Euler's totient φ(39427) = 38896 numbers up to 39427 share no factor with it.
- 4
The digits of 39427 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 62 steps to reach 1.
LaTeX source of the formulas on this page
\[ 39427 = 89 \times 443 \]
39427 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 39960 |
| Euler totient φ(n) | 38896 |
| Square | 1554488329 |
| Cube | 61288811347483 |
| Square root | 198.562333 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 62 |
| Scientific notation | 3.9427 × |
39427 in other forms
| Form | Value |
|---|---|
| In words | thirty-nine thousand four hundred and twenty-seven |
| Binary (base 2) | 1001101000000011 |
| Octal (base 8) | 115003 |
| Hexadecimal (base 16) | 9A03 |
| Base 3 | 2000002021 |
| As time | 39427 seconds = 10 h 57 min 7 s |
Is 39427 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 1) | 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 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 39427 a prime number?
No. 39427 = 89 × 443, so it is divisible by 89.
What are the factors of 39427?
1, 89, 443, 39427.
What is 39427 in binary?
1001101000000011 (hexadecimal 9A03, octal 115003).
What is the square root of 39427?
About 198.5623.
Is 39427 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 39427?
39427 is a semiprime: 89 × 443, the product of two primes.