The number 9139
9139 is a composite number with 8 divisors. Its prime factorisation is 13 × 19 × 37. Divisors (8): 1, 13, 19, 37, 247, 481, 703, 9139.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
9139 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
9139 is composite. Its prime factorisation is
- 3
The divisors add up to 10640; without 9139 itself that is 1501, so 9139 is deficient (1501 is less than 9139). Euler's totient φ(9139) = 7776 numbers up to 9139 share no factor with it.
- 4
The digits of 9139 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 34 steps to reach 1.
LaTeX source of the formulas on this page
\[ 9139 = 13 \times 19 \times 37 \]
9139 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 10640 |
| Euler totient φ(n) | 7776 |
| Square | 83521321 |
| Cube | 763301352619 |
| Square root | 95.598117 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 34 |
| Scientific notation | 9.139 × |
9139 in other forms
| Form | Value |
|---|---|
| In words | nine thousand one hundred and thirty-nine |
| Binary (base 2) | 10001110110011 |
| Octal (base 8) | 21663 |
| Hexadecimal (base 16) | 23B3 |
| Base 3 | 110112111 |
| As time | 9139 seconds = 2 h 32 min 19 s |
Is 9139 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 4) | 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 4) | 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 4) | 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 9) | 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 9139 a prime number?
No. 9139 = 13 × 19 × 37, so it is divisible by 13.
What are the factors of 9139?
1, 13, 19, 37, 247, 481, 703, 9139.
What is 9139 in binary?
10001110110011 (hexadecimal 23B3, octal 21663).
What is the square root of 9139?
About 95.5981.
Is 9139 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 9139?
It is a composite number with 8 divisors.