The number 49889
49889 is a composite number with 4 divisors. Its prime factorisation is 7 × 7127. Divisors (4): 1, 7, 7127, 49889.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49889: a semiprime: 7 × 7127, the product of two primes.
- 2
49889 is composite. Its prime factorisation is
- 3
The divisors add up to 57024; without 49889 itself that is 7135, so 49889 is deficient (7135 is less than 49889). Euler's totient φ(49889) = 42756 numbers up to 49889 share no factor with it.
- 4
The digits of 49889 add up to 38, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 189 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49889 = 7 \times 7127 \]
49889 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 57024 |
| Euler totient φ(n) | 42756 |
| Square | 2488912321 |
| Cube | 124169346782369 |
| Square root | 223.358456 |
| Digit sum / digital root | 38 / 2 |
| Collatz steps to 1 | 189 |
| Scientific notation | 4.9889 × |
49889 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand eight hundred and eighty-nine |
| Binary (base 2) | 1100001011100001 |
| Octal (base 8) | 141341 |
| Hexadecimal (base 16) | C2E1 |
| Base 3 | 2112102202 |
| As time | 49889 seconds = 13 h 51 min 29 s |
Is 49889 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 | Yes (49889 ÷ 7 = 7127) | 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 2) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49889 a prime number?
No. 49889 = 7 × 7127, so it is divisible by 7.
What are the factors of 49889?
1, 7, 7127, 49889.
What is 49889 in binary?
1100001011100001 (hexadecimal C2E1, octal 141341).
What is the square root of 49889?
About 223.3585.
Is 49889 divisible by 3?
No. Its digits add up to 38, which is not a multiple of 3.
What is special about the number 49889?
49889 is a semiprime: 7 × 7127, the product of two primes.