The number 47449
47449 is a composite number with 4 divisors. Its prime factorisation is 23 × 2063. Divisors (4): 1, 23, 2063, 47449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47449: a semiprime: 23 × 2063, the product of two primes.
- 2
47449 is composite. Its prime factorisation is
- 3
The divisors add up to 49536; without 47449 itself that is 2087, so 47449 is deficient (2087 is less than 47449). Euler's totient φ(47449) = 45364 numbers up to 47449 share no factor with it.
- 4
The digits of 47449 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 176 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47449 = 23 \times 2063 \]
47449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 49536 |
| Euler totient φ(n) | 45364 |
| Square | 2251407601 |
| Cube | 106827039259849 |
| Square root | 217.827914 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 176 |
| Scientific notation | 4.7449 × |
47449 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and forty-nine |
| Binary (base 2) | 1011100101011001 |
| Octal (base 8) | 134531 |
| Hexadecimal (base 16) | B959 |
| Base 3 | 2102002101 |
| As time | 47449 seconds = 13 h 10 min 49 s |
Is 47449 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 1) | 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 1) | 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 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47449 a prime number?
No. 47449 = 23 × 2063, so it is divisible by 23.
What are the factors of 47449?
1, 23, 2063, 47449.
What is 47449 in binary?
1011100101011001 (hexadecimal B959, octal 134531).
What is the square root of 47449?
About 217.8279.
Is 47449 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 47449?
47449 is a semiprime: 23 × 2063, the product of two primes.