The number 47469
47469 is a composite number with 4 divisors. Its prime factorisation is 3 × 15823. Divisors (4): 1, 3, 15823, 47469.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47469: a semiprime: 3 × 15823, the product of two primes.
- 2
47469 is composite. Its prime factorisation is
- 3
The divisors add up to 63296; without 47469 itself that is 15827, so 47469 is deficient (15827 is less than 47469). Euler's totient φ(47469) = 31644 numbers up to 47469 share no factor with it.
- 4
The digits of 47469 add up to 30, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 75 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47469 = 3 \times 15823 \]
47469 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 63296 |
| Euler totient φ(n) | 31644 |
| Square | 2253305961 |
| Cube | 106962180662709 |
| Square root | 217.873817 |
| Digit sum / digital root | 30 / 3 |
| Collatz steps to 1 | 75 |
| Scientific notation | 4.7469 × |
47469 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and sixty-nine |
| Binary (base 2) | 1011100101101101 |
| Octal (base 8) | 134555 |
| Hexadecimal (base 16) | B96D |
| Base 3 | 2102010010 |
| As time | 47469 seconds = 13 h 11 min 9 s |
Is 47469 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 | Yes (47469 ÷ 3 = 15823) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 3) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47469 a prime number?
No. 47469 = 3 × 15823, so it is divisible by 3.
What are the factors of 47469?
1, 3, 15823, 47469.
What is 47469 in binary?
1011100101101101 (hexadecimal B96D, octal 134555).
What is the square root of 47469?
About 217.8738.
Is 47469 divisible by 3?
Yes. Its digits add up to 30, a multiple of 3.
What is special about the number 47469?
47469 is a semiprime: 3 × 15823, the product of two primes.