The number 16449
16449 is a composite number with 4 divisors. Its prime factorisation is 3 × 5483. Divisors (4): 1, 3, 5483, 16449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 16449: a semiprime: 3 × 5483, the product of two primes.
- 2
16449 is composite. Its prime factorisation is
- 3
The divisors add up to 21936; without 16449 itself that is 5487, so 16449 is deficient (5487 is less than 16449). Euler's totient φ(16449) = 10964 numbers up to 16449 share no factor with it.
- 4
The digits of 16449 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 115 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16449 = 3 \times 5483 \]
16449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 21936 |
| Euler totient φ(n) | 10964 |
| Square | 270569601 |
| Cube | 4450599366849 |
| Square root | 128.253655 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 115 |
| Scientific notation | 1.6449 × |
16449 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand four hundred and forty-nine |
| Binary (base 2) | 100000001000001 |
| Octal (base 8) | 40101 |
| Hexadecimal (base 16) | 4041 |
| Base 3 | 211120020 |
| As time | 16449 seconds = 4 h 34 min 9 s |
Is 16449 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 (16449 ÷ 3 = 5483) | 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 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 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 4) | 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 16449 a prime number?
No. 16449 = 3 × 5483, so it is divisible by 3.
What are the factors of 16449?
1, 3, 5483, 16449.
What is 16449 in binary?
100000001000001 (hexadecimal 4041, octal 40101).
What is the square root of 16449?
About 128.2537.
Is 16449 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 16449?
16449 is a semiprime: 3 × 5483, the product of two primes.