The number 49779
49779 is a composite number with 6 divisors. Its prime factorisation is × 5531. Divisors (6): 1, 3, 9, 5531, 16593, 49779.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
49779 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49779 is composite. Its prime factorisation is
- 3
The divisors add up to 71916; without 49779 itself that is 22137, so 49779 is deficient (22137 is less than 49779). Euler's totient φ(49779) = 33180 numbers up to 49779 share no factor with it.
- 4
The digits of 49779 add up to 36, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 158 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49779 = 3^{2} \times 5531 \]49779 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 71916 |
| Euler totient φ(n) | 33180 |
| Square | 2477948841 |
| Cube | 123349815356139 |
| Square root | 223.112079 (= 3√5531) |
| Digit sum / digital root | 36 / 9 |
| Collatz steps to 1 | 158 |
| Scientific notation | 4.9779 × |
49779 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand seven hundred and seventy-nine |
| Binary (base 2) | 1100001001110011 |
| Octal (base 8) | 141163 |
| Hexadecimal (base 16) | C273 |
| Base 3 | 2112021200 |
| As time | 49779 seconds = 13 h 49 min 39 s |
Is 49779 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 (49779 ÷ 3 = 16593) | 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (49779 ÷ 9 = 5531) | 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 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49779 a prime number?
No. 49779 = × 5531, so it is divisible by 3.
What are the factors of 49779?
1, 3, 9, 5531, 16593, 49779.
What is 49779 in binary?
1100001001110011 (hexadecimal C273, octal 141163).
What is the square root of 49779?
About 223.1121, exactly 3√5531.
Is 49779 divisible by 3?
Yes. Its digits add up to 36, a multiple of 3.
What is special about the number 49779?
It is a composite number with 6 divisors.