The number 9081
9081 is a composite number with 6 divisors. Its prime factorisation is × 1009. Divisors (6): 1, 3, 9, 1009, 3027, 9081.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
9081 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
9081 is composite. Its prime factorisation is
- 3
The divisors add up to 13130; without 9081 itself that is 4049, so 9081 is deficient (4049 is less than 9081). Euler's totient φ(9081) = 6048 numbers up to 9081 share no factor with it.
- 4
The digits of 9081 add up to 18, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 96 steps to reach 1.
LaTeX source of the formulas on this page
\[ 9081 = 3^{2} \times 1009 \]9081 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 13130 |
| Euler totient φ(n) | 6048 |
| Square | 82464561 |
| Cube | 748860678441 |
| Square root | 95.294281 (= 3√1009) |
| Digit sum / digital root | 18 / 9 |
| Collatz steps to 1 | 96 |
| Scientific notation | 9.081 × |
9081 in other forms
| Form | Value |
|---|---|
| In words | nine thousand and eighty-one |
| Binary (base 2) | 10001101111001 |
| Octal (base 8) | 21571 |
| Hexadecimal (base 16) | 2379 |
| Base 3 | 110110100 |
| As time | 9081 seconds = 2 h 31 min 21 s |
Is 9081 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 (9081 ÷ 3 = 3027) | 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 1) | 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 | Yes (9081 ÷ 9 = 1009) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | 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 9081 a prime number?
No. 9081 = × 1009, so it is divisible by 3.
What are the factors of 9081?
1, 3, 9, 1009, 3027, 9081.
What is 9081 in binary?
10001101111001 (hexadecimal 2379, octal 21571).
What is the square root of 9081?
About 95.2943, exactly 3√1009.
Is 9081 divisible by 3?
Yes. Its digits add up to 18, a multiple of 3.
What is special about the number 9081?
It is a composite number with 6 divisors.