The number 47443
47443 is a composite number with 8 divisors. Its prime factorisation is 11 × 19 × 227. Divisors (8): 1, 11, 19, 209, 227, 2497, 4313, 47443.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47443 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47443 is composite. Its prime factorisation is
- 3
The divisors add up to 54720; without 47443 itself that is 7277, so 47443 is deficient (7277 is less than 47443). Euler's totient φ(47443) = 40680 numbers up to 47443 share no factor with it.
- 4
The digits of 47443 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 75 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47443 = 11 \times 19 \times 227 \]
47443 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 54720 |
| Euler totient φ(n) | 40680 |
| Square | 2250838249 |
| Cube | 106786519047307 |
| Square root | 217.814141 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 75 |
| Scientific notation | 4.7443 × |
47443 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and forty-three |
| Binary (base 2) | 1011100101010011 |
| Octal (base 8) | 134523 |
| Hexadecimal (base 16) | B953 |
| Base 3 | 2102002011 |
| As time | 47443 seconds = 13 h 10 min 43 s |
Is 47443 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | 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 4) | 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 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (47443 ÷ 11 = 4313) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47443 a prime number?
No. 47443 = 11 × 19 × 227, so it is divisible by 11.
What are the factors of 47443?
1, 11, 19, 209, 227, 2497, 4313, 47443.
What is 47443 in binary?
1011100101010011 (hexadecimal B953, octal 134523).
What is the square root of 47443?
About 217.8141.
Is 47443 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 47443?
It is a composite number with 8 divisors.