The number 38999
38999 is a composite number with 4 divisors. Its prime factorisation is 59 × 661. Divisors (4): 1, 59, 661, 38999.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 38999: a semiprime: 59 × 661, the product of two primes.
- 2
38999 is composite. Its prime factorisation is
- 3
The divisors add up to 39720; without 38999 itself that is 721, so 38999 is deficient (721 is less than 38999). Euler's totient φ(38999) = 38280 numbers up to 38999 share no factor with it.
- 4
The digits of 38999 add up to 38, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 49 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38999 = 59 \times 661 \]
38999 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 39720 |
| Euler totient φ(n) | 38280 |
| Square | 1520922001 |
| Cube | 59314437116999 |
| Square root | 197.481645 |
| Digit sum / digital root | 38 / 2 |
| Collatz steps to 1 | 49 |
| Scientific notation | 3.8999 × |
38999 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand nine hundred and ninety-nine |
| Binary (base 2) | 1001100001010111 |
| Octal (base 8) | 114127 |
| Hexadecimal (base 16) | 9857 |
| Base 3 | 1222111102 |
| As time | 38999 seconds = 10 h 49 min 59 s |
Is 38999 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 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 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 4) | 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 38999 a prime number?
No. 38999 = 59 × 661, so it is divisible by 59.
What are the factors of 38999?
1, 59, 661, 38999.
What is 38999 in binary?
1001100001010111 (hexadecimal 9857, octal 114127).
What is the square root of 38999?
About 197.4816.
Is 38999 divisible by 3?
No. Its digits add up to 38, which is not a multiple of 3.
What is special about the number 38999?
38999 is a semiprime: 59 × 661, the product of two primes.