The number 13449
13449 is a composite number with 4 divisors. Its prime factorisation is 3 × 4483. Divisors (4): 1, 3, 4483, 13449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 13449: a semiprime: 3 × 4483, the product of two primes.
- 2
13449 is composite. Its prime factorisation is
- 3
The divisors add up to 17936; without 13449 itself that is 4487, so 13449 is deficient (4487 is less than 13449). Euler's totient φ(13449) = 8964 numbers up to 13449 share no factor with it.
- 4
The digits of 13449 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 226 steps to reach 1.
LaTeX source of the formulas on this page
\[ 13449 = 3 \times 4483 \]
13449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 17936 |
| Euler totient φ(n) | 8964 |
| Square | 180875601 |
| Cube | 2432595957849 |
| Square root | 115.969824 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 226 |
| Scientific notation | 1.3449 × |
13449 in other forms
| Form | Value |
|---|---|
| In words | thirteen thousand four hundred and forty-nine |
| Binary (base 2) | 11010010001001 |
| Octal (base 8) | 32211 |
| Hexadecimal (base 16) | 3489 |
| Base 3 | 200110010 |
| As time | 13449 seconds = 3 h 44 min 9 s |
Is 13449 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 (13449 ÷ 3 = 4483) | 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 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 3) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 13449 a prime number?
No. 13449 = 3 × 4483, so it is divisible by 3.
What are the factors of 13449?
1, 3, 4483, 13449.
What is 13449 in binary?
11010010001001 (hexadecimal 3489, octal 32211).
What is the square root of 13449?
About 115.9698.
Is 13449 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 13449?
13449 is a semiprime: 3 × 4483, the product of two primes.