The number 47249
47249 is a composite number with 4 divisors. Its prime factorisation is 37 × 1277. Divisors (4): 1, 37, 1277, 47249.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47249: a semiprime: 37 × 1277, the product of two primes.
- 2
47249 is composite. Its prime factorisation is
- 3
The divisors add up to 48564; without 47249 itself that is 1315, so 47249 is deficient (1315 is less than 47249). Euler's totient φ(47249) = 45936 numbers up to 47249 share no factor with it.
- 4
The digits of 47249 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 83 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47249 = 37 \times 1277 \]
47249 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 48564 |
| Euler totient φ(n) | 45936 |
| Square | 2232468001 |
| Cube | 105481880579249 |
| Square root | 217.368351 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 83 |
| Scientific notation | 4.7249 × |
47249 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand two hundred and forty-nine |
| Binary (base 2) | 1011100010010001 |
| Octal (base 8) | 134221 |
| Hexadecimal (base 16) | B891 |
| Base 3 | 2101210222 |
| As time | 47249 seconds = 13 h 7 min 29 s |
Is 47249 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 1) | 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 6) | 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 | No (remainder 8) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47249 a prime number?
No. 47249 = 37 × 1277, so it is divisible by 37.
What are the factors of 47249?
1, 37, 1277, 47249.
What is 47249 in binary?
1011100010010001 (hexadecimal B891, octal 134221).
What is the square root of 47249?
About 217.3684.
Is 47249 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 47249?
47249 is a semiprime: 37 × 1277, the product of two primes.