The number 949
949 is a palindrome: it reads 949 backwards too. Its prime factorisation is 13 × 73. Divisors (4): 1, 13, 73, 949.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 949: a palindrome: it reads 949 backwards too; a semiprime: 13 × 73, the product of two primes.
- 2
949 is composite. Its prime factorisation is
- 3
The divisors add up to 1036; without 949 itself that is 87, so 949 is deficient (87 is less than 949). Euler's totient φ(949) = 864 numbers up to 949 share no factor with it.
- 4
The digits of 949 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 36 steps to reach 1.
LaTeX source of the formulas on this page
\[ 949 = 13 \times 73 \]
949 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 1036 |
| Euler totient φ(n) | 864 |
| Square | 900601 |
| Cube | 854670349 |
| Square root | 30.805844 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 36 |
| Scientific notation | 9.49 × |
949 in other forms
| Form | Value |
|---|---|
| In words | nine hundred and forty-nine |
| Roman numerals | CMXLIX |
| Binary (base 2) | 1110110101 |
| Octal (base 8) | 1665 |
| Hexadecimal (base 16) | 3B5 |
| Base 3 | 1022011 |
| As time | 949 seconds = 15 min 49 s |
Is 949 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 4) | 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 4) | 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 3) | 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 949 a prime number?
No. 949 = 13 × 73, so it is divisible by 13.
What are the factors of 949?
1, 13, 73, 949.
What is 949 in binary?
1110110101 (hexadecimal 3B5, octal 1665).
What is the square root of 949?
About 30.8058.
What is 949 in Roman numerals?
CMXLIX.
Is 949 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 949?
949 is a palindrome: it reads 949 backwards too; a semiprime: 13 × 73, the product of two primes.