The number 80039
80039 is the 7839th prime number. Its only divisors are 1 and 80039.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80039: the 7839th prime number.
- 2
80039 is prime, so its only factors are 1 and 80039. It is the 7839th prime; the next prime is 80051 and the one before is 80021.
- 3
The divisors add up to 80040; without 80039 itself that is 1, so 80039 is deficient (1 is less than 80039). Euler's totient φ(80039) = 80038 numbers up to 80039 share no factor with it.
- 4
The digits of 80039 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 120 steps to reach 1.
80039 at a glance
| Property | Value |
|---|---|
| Type | prime |
| Number of divisors | 2 |
| Sum of divisors | 80040 |
| Euler totient φ(n) | 80038 |
| Square | 6406241521 |
| Cube | 512749165099319 |
| Square root | 282.911647 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 120 |
| Scientific notation | 8.0039 × |
80039 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand and thirty-nine |
| Binary (base 2) | 10011100010100111 |
| Octal (base 8) | 234247 |
| Hexadecimal (base 16) | 138A7 |
| Base 3 | 11001210102 |
| As time | 80039 seconds = 22 h 13 min 59 s |
Is 80039 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 2) | 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 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80039 a prime number?
Yes. 80039 is divisible only by 1 and itself.
What are the factors of 80039?
1, 80039.
What is 80039 in binary?
10011100010100111 (hexadecimal 138A7, octal 234247).
What is the square root of 80039?
About 282.9116.
Is 80039 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 80039?
80039 is the 7839th prime number.