The number 16949
16949 is a composite number with 4 divisors. Its prime factorisation is 17 × 997. Divisors (4): 1, 17, 997, 16949.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 16949: a semiprime: 17 × 997, the product of two primes.
- 2
16949 is composite. Its prime factorisation is
- 3
The divisors add up to 17964; without 16949 itself that is 1015, so 16949 is deficient (1015 is less than 16949). Euler's totient φ(16949) = 15936 numbers up to 16949 share no factor with it.
- 4
The digits of 16949 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 35 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16949 = 17 \times 997 \]
16949 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 17964 |
| Euler totient φ(n) | 15936 |
| Square | 287268601 |
| Cube | 4868915518349 |
| Square root | 130.188325 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 35 |
| Scientific notation | 1.6949 × |
16949 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand nine hundred and forty-nine |
| Binary (base 2) | 100001000110101 |
| Octal (base 8) | 41065 |
| Hexadecimal (base 16) | 4235 |
| Base 3 | 212020202 |
| As time | 16949 seconds = 4 h 42 min 29 s |
Is 16949 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 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 5) | 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 9) | 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 16949 a prime number?
No. 16949 = 17 × 997, so it is divisible by 17.
What are the factors of 16949?
1, 17, 997, 16949.
What is 16949 in binary?
100001000110101 (hexadecimal 4235, octal 41065).
What is the square root of 16949?
About 130.1883.
Is 16949 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 16949?
16949 is a semiprime: 17 × 997, the product of two primes.