The number 12449
12449 is a composite number with 4 divisors. Its prime factorisation is 59 × 211. Divisors (4): 1, 59, 211, 12449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 12449: a semiprime: 59 × 211, the product of two primes.
- 2
12449 is composite. Its prime factorisation is
- 3
The divisors add up to 12720; without 12449 itself that is 271, so 12449 is deficient (271 is less than 12449). Euler's totient φ(12449) = 12180 numbers up to 12449 share no factor with it.
- 4
The digits of 12449 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 156 steps to reach 1.
LaTeX source of the formulas on this page
\[ 12449 = 59 \times 211 \]
12449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 12720 |
| Euler totient φ(n) | 12180 |
| Square | 154977601 |
| Cube | 1929316154849 |
| Square root | 111.575087 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 156 |
| Scientific notation | 1.2449 × |
12449 in other forms
| Form | Value |
|---|---|
| In words | twelve thousand four hundred and forty-nine |
| Binary (base 2) | 11000010100001 |
| Octal (base 8) | 30241 |
| Hexadecimal (base 16) | 30A1 |
| Base 3 | 122002002 |
| As time | 12449 seconds = 3 h 27 min 29 s |
Is 12449 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 3) | 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 8) | 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 12449 a prime number?
No. 12449 = 59 × 211, so it is divisible by 59.
What are the factors of 12449?
1, 59, 211, 12449.
What is 12449 in binary?
11000010100001 (hexadecimal 30A1, octal 30241).
What is the square root of 12449?
About 111.5751.
Is 12449 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 12449?
12449 is a semiprime: 59 × 211, the product of two primes.