The number 7449
7449 is a composite number with 8 divisors. Its prime factorisation is 3 × 13 × 191. Divisors (8): 1, 3, 13, 39, 191, 573, 2483, 7449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
7449 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
7449 is composite. Its prime factorisation is
- 3
The divisors add up to 10752; without 7449 itself that is 3303, so 7449 is deficient (3303 is less than 7449). Euler's totient φ(7449) = 4560 numbers up to 7449 share no factor with it.
- 4
The digits of 7449 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 114 steps to reach 1.
LaTeX source of the formulas on this page
\[ 7449 = 3 \times 13 \times 191 \]
7449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 10752 |
| Euler totient φ(n) | 4560 |
| Square | 55487601 |
| Cube | 413327139849 |
| Square root | 86.307589 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 114 |
| Scientific notation | 7.449 × |
7449 in other forms
| Form | Value |
|---|---|
| In words | seven thousand four hundred and forty-nine |
| Binary (base 2) | 1110100011001 |
| Octal (base 8) | 16431 |
| Hexadecimal (base 16) | 1D19 |
| Base 3 | 101012220 |
| As time | 7449 seconds = 2 h 4 min 9 s |
Is 7449 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 (7449 ÷ 3 = 2483) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | 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 6) | 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 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 7449 a prime number?
No. 7449 = 3 × 13 × 191, so it is divisible by 3.
What are the factors of 7449?
1, 3, 13, 39, 191, 573, 2483, 7449.
What is 7449 in binary?
1110100011001 (hexadecimal 1D19, octal 16431).
What is the square root of 7449?
About 86.3076.
Is 7449 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 7449?
It is a composite number with 8 divisors.