The number 46921
46921 is a composite number with 4 divisors. Its prime factorisation is 7 × 6703. Divisors (4): 1, 7, 6703, 46921.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 46921: a semiprime: 7 × 6703, the product of two primes.
- 2
46921 is composite. Its prime factorisation is
- 3
The divisors add up to 53632; without 46921 itself that is 6711, so 46921 is deficient (6711 is less than 46921). Euler's totient φ(46921) = 40212 numbers up to 46921 share no factor with it.
- 4
The digits of 46921 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 251 steps to reach 1.
LaTeX source of the formulas on this page
\[ 46921 = 7 \times 6703 \]
46921 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 53632 |
| Euler totient φ(n) | 40212 |
| Square | 2201580241 |
| Cube | 103300346487961 |
| Square root | 216.612557 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 251 |
| Scientific notation | 4.6921 × |
46921 in other forms
| Form | Value |
|---|---|
| In words | forty-six thousand nine hundred and twenty-one |
| Binary (base 2) | 1011011101001001 |
| Octal (base 8) | 133511 |
| Hexadecimal (base 16) | B749 |
| Base 3 | 2101100211 |
| As time | 46921 seconds = 13 h 2 min 1 s |
Is 46921 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 1) | 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 | Yes (46921 ÷ 7 = 6703) | 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 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | 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 46921 a prime number?
No. 46921 = 7 × 6703, so it is divisible by 7.
What are the factors of 46921?
1, 7, 6703, 46921.
What is 46921 in binary?
1011011101001001 (hexadecimal B749, octal 133511).
What is the square root of 46921?
About 216.6126.
Is 46921 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 46921?
46921 is a semiprime: 7 × 6703, the product of two primes.