The number 49289
49289 is a composite number with 4 divisors. Its prime factorisation is 23 × 2143. Divisors (4): 1, 23, 2143, 49289.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49289: a semiprime: 23 × 2143, the product of two primes.
- 2
49289 is composite. Its prime factorisation is
- 3
The divisors add up to 51456; without 49289 itself that is 2167, so 49289 is deficient (2167 is less than 49289). Euler's totient φ(49289) = 47124 numbers up to 49289 share no factor with it.
- 4
The digits of 49289 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 158 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49289 = 23 \times 2143 \]
49289 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 51456 |
| Euler totient φ(n) | 47124 |
| Square | 2429405521 |
| Cube | 119742968724569 |
| Square root | 222.011261 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 158 |
| Scientific notation | 4.9289 × |
49289 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand two hundred and eighty-nine |
| Binary (base 2) | 1100000010001001 |
| Octal (base 8) | 140211 |
| Hexadecimal (base 16) | C089 |
| Base 3 | 2111121112 |
| As time | 49289 seconds = 13 h 41 min 29 s |
Is 49289 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 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 9) | 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 49289 a prime number?
No. 49289 = 23 × 2143, so it is divisible by 23.
What are the factors of 49289?
1, 23, 2143, 49289.
What is 49289 in binary?
1100000010001001 (hexadecimal C089, octal 140211).
What is the square root of 49289?
About 222.0113.
Is 49289 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 49289?
49289 is a semiprime: 23 × 2143, the product of two primes.