The number 27939
27939 is a composite number with 8 divisors. Its prime factorisation is 3 × 67 × 139. Divisors (8): 1, 3, 67, 139, 201, 417, 9313, 27939.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
27939 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
27939 is composite. Its prime factorisation is
- 3
The divisors add up to 38080; without 27939 itself that is 10141, so 27939 is deficient (10141 is less than 27939). Euler's totient φ(27939) = 18216 numbers up to 27939 share no factor with it.
- 4
The digits of 27939 add up to 30, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 108 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27939 = 3 \times 67 \times 139 \]
27939 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 38080 |
| Euler totient φ(n) | 18216 |
| Square | 780587721 |
| Cube | 21808840337019 |
| Square root | 167.149634 |
| Digit sum / digital root | 30 / 3 |
| Collatz steps to 1 | 108 |
| Scientific notation | 2.7939 × |
27939 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand nine hundred and thirty-nine |
| Binary (base 2) | 110110100100011 |
| Octal (base 8) | 66443 |
| Hexadecimal (base 16) | 6D23 |
| Base 3 | 1102022210 |
| As time | 27939 seconds = 7 h 45 min 39 s |
Is 27939 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 (27939 ÷ 3 = 9313) | 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | 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 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 27939 a prime number?
No. 27939 = 3 × 67 × 139, so it is divisible by 3.
What are the factors of 27939?
1, 3, 67, 139, 201, 417, 9313, 27939.
What is 27939 in binary?
110110100100011 (hexadecimal 6D23, octal 66443).
What is the square root of 27939?
About 167.1496.
Is 27939 divisible by 3?
Yes. Its digits add up to 30, a multiple of 3.
What is special about the number 27939?
It is a composite number with 8 divisors.