The number 47429
47429 is a composite number with 4 divisors. Its prime factorisation is 43 × 1103. Divisors (4): 1, 43, 1103, 47429.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47429: a semiprime: 43 × 1103, the product of two primes.
- 2
47429 is composite. Its prime factorisation is
- 3
The divisors add up to 48576; without 47429 itself that is 1147, so 47429 is deficient (1147 is less than 47429). Euler's totient φ(47429) = 46284 numbers up to 47429 share no factor with it.
- 4
The digits of 47429 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 189 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47429 = 43 \times 1103 \]
47429 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 48576 |
| Euler totient φ(n) | 46284 |
| Square | 2249510041 |
| Cube | 106692011734589 |
| Square root | 217.782001 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 189 |
| Scientific notation | 4.7429 × |
47429 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and twenty-nine |
| Binary (base 2) | 1011100101000101 |
| Octal (base 8) | 134505 |
| Hexadecimal (base 16) | B945 |
| Base 3 | 2102001122 |
| As time | 47429 seconds = 13 h 10 min 29 s |
Is 47429 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 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 5) | 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 8) | 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 47429 a prime number?
No. 47429 = 43 × 1103, so it is divisible by 43.
What are the factors of 47429?
1, 43, 1103, 47429.
What is 47429 in binary?
1011100101000101 (hexadecimal B945, octal 134505).
What is the square root of 47429?
About 217.7820.
Is 47429 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 47429?
47429 is a semiprime: 43 × 1103, the product of two primes.