The number 994
994 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 71. Divisors (8): 1, 2, 7, 14, 71, 142, 497, 994.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
994 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
994 is composite. Its prime factorisation is
- 3
The divisors add up to 1728; without 994 itself that is 734, so 994 is deficient (734 is less than 994). Euler's totient φ(994) = 420 numbers up to 994 share no factor with it.
- 4
The digits of 994 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 23 steps to reach 1.
LaTeX source of the formulas on this page
\[ 994 = 2 \times 7 \times 71 \]
994 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 1728 |
| Euler totient φ(n) | 420 |
| Square | 988036 |
| Cube | 982107784 |
| Square root | 31.527766 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 23 |
| Scientific notation | 9.94 × |
994 in other forms
| Form | Value |
|---|---|
| In words | nine hundred and ninety-four |
| Roman numerals | CMXCIV |
| Binary (base 2) | 1111100010 |
| Octal (base 8) | 1742 |
| Hexadecimal (base 16) | 3E2 |
| Base 3 | 1100211 |
| As time | 994 seconds = 16 min 34 s |
Is 994 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (994 ÷ 2 = 497) | 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 2) | 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 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (994 ÷ 7 = 142) | 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 2) | 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 4) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 994 a prime number?
No. 994 = 2 × 7 × 71, so it is divisible by 2.
What are the factors of 994?
1, 2, 7, 14, 71, 142, 497, 994.
What is 994 in binary?
1111100010 (hexadecimal 3E2, octal 1742).
What is the square root of 994?
About 31.5278.
What is 994 in Roman numerals?
CMXCIV.
Is 994 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 994?
It is a composite number with 8 divisors.