The number 49769
49769 is a composite number with 4 divisors. Its prime factorisation is 157 × 317. Divisors (4): 1, 157, 317, 49769.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49769: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 157 × 317, the product of two primes.
- 2
49769 is composite. Its prime factorisation is
- 3
The divisors add up to 50244; without 49769 itself that is 475, so 49769 is deficient (475 is less than 49769). Euler's totient φ(49769) = 49296 numbers up to 49769 share no factor with it.
- 4
The digits of 49769 add up to 35, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 96 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49769 = 157 \times 317 \]
49769 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 50244 |
| Euler totient φ(n) | 49296 |
| Square | 2476953361 |
| Cube | 123275491823609 |
| Square root | 223.089668 |
| Digit sum / digital root | 35 / 8 |
| Collatz steps to 1 | 96 |
| Scientific notation | 4.9769 × |
49769 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand seven hundred and sixty-nine |
| Binary (base 2) | 1100001001101001 |
| Octal (base 8) | 141151 |
| Hexadecimal (base 16) | C269 |
| Base 3 | 2112021022 |
| As time | 49769 seconds = 13 h 49 min 29 s |
Is 49769 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 5) | 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 49769 a prime number?
No. 49769 = 157 × 317, so it is divisible by 157.
What are the factors of 49769?
1, 157, 317, 49769.
What is 49769 in binary?
1100001001101001 (hexadecimal C269, octal 141151).
What is the square root of 49769?
About 223.0897.
Is 49769 divisible by 3?
No. Its digits add up to 35, which is not a multiple of 3.
What is special about the number 49769?
49769 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 157 × 317, the product of two primes.