The number 2449
2449 is a composite number with 4 divisors. Its prime factorisation is 31 × 79. Divisors (4): 1, 31, 79, 2449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 2449: a semiprime: 31 × 79, the product of two primes.
- 2
2449 is composite. Its prime factorisation is
- 3
The divisors add up to 2560; without 2449 itself that is 111, so 2449 is deficient (111 is less than 2449). Euler's totient φ(2449) = 2340 numbers up to 2449 share no factor with it.
- 4
The digits of 2449 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 133 steps to reach 1.
LaTeX source of the formulas on this page
\[ 2449 = 31 \times 79 \]
2449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 2560 |
| Euler totient φ(n) | 2340 |
| Square | 5997601 |
| Cube | 14688124849 |
| Square root | 49.487372 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 133 |
| Scientific notation | 2.449 × |
2449 in other forms
| Form | Value |
|---|---|
| In words | two thousand four hundred and forty-nine |
| Roman numerals | MMCDXLIX |
| Binary (base 2) | 100110010001 |
| Octal (base 8) | 4621 |
| Hexadecimal (base 16) | 991 |
| Base 3 | 10100201 |
| As time | 2449 seconds = 40 min 49 s |
Is 2449 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 1) | 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 1) | 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 1) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 2449 a prime number?
No. 2449 = 31 × 79, so it is divisible by 31.
What are the factors of 2449?
1, 31, 79, 2449.
What is 2449 in binary?
100110010001 (hexadecimal 991, octal 4621).
What is the square root of 2449?
About 49.4874.
What is 2449 in Roman numerals?
MMCDXLIX.
Is 2449 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 2449?
2449 is a semiprime: 31 × 79, the product of two primes.