The number 29939
29939 is a composite number with 12 divisors. Its prime factorisation is × 13 × 47. Divisors (12): 1, 7, 13, 47, 49, 91, 329, 611, 637, 2303, 4277, 29939.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
29939 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
29939 is composite. Its prime factorisation is
- 3
The divisors add up to 38304; without 29939 itself that is 8365, so 29939 is deficient (8365 is less than 29939). Euler's totient φ(29939) = 23184 numbers up to 29939 share no factor with it.
- 4
The digits of 29939 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 72 steps to reach 1.
LaTeX source of the formulas on this page
\[ 29939 = 7^{2} \times 13 \times 47 \]29939 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 38304 |
| Euler totient φ(n) | 23184 |
| Square | 896343721 |
| Cube | 26835634663019 |
| Square root | 173.028899 (= 7√611) |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 72 |
| Scientific notation | 2.9939 × |
29939 in other forms
| Form | Value |
|---|---|
| In words | twenty-nine thousand nine hundred and thirty-nine |
| Binary (base 2) | 111010011110011 |
| Octal (base 8) | 72363 |
| Hexadecimal (base 16) | 74F3 |
| Base 3 | 1112001212 |
| As time | 29939 seconds = 8 h 18 min 59 s |
Is 29939 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 | Yes (29939 ÷ 7 = 4277) | 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 5) | 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 8) | 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 29939 a prime number?
No. 29939 = × 13 × 47, so it is divisible by 7.
What are the factors of 29939?
1, 7, 13, 47, 49, 91, 329, 611, 637, 2303, 4277, 29939.
What is 29939 in binary?
111010011110011 (hexadecimal 74F3, octal 72363).
What is the square root of 29939?
About 173.0289, exactly 7√611.
Is 29939 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 29939?
It is a composite number with 12 divisors.