The number 41009
41009 is a composite number with 4 divisors. Its prime factorisation is 23 × 1783. Divisors (4): 1, 23, 1783, 41009.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 41009: a semiprime: 23 × 1783, the product of two primes.
- 2
41009 is composite. Its prime factorisation is
- 3
The divisors add up to 42816; without 41009 itself that is 1807, so 41009 is deficient (1807 is less than 41009). Euler's totient φ(41009) = 39204 numbers up to 41009 share no factor with it.
- 4
The digits of 41009 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 62 steps to reach 1.
LaTeX source of the formulas on this page
\[ 41009 = 23 \times 1783 \]
41009 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 42816 |
| Euler totient φ(n) | 39204 |
| Square | 1681738081 |
| Cube | 68966396963729 |
| Square root | 202.506790 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 62 |
| Scientific notation | 4.1009 × |
41009 in other forms
| Form | Value |
|---|---|
| In words | forty-one thousand and nine |
| Binary (base 2) | 1010000000110001 |
| Octal (base 8) | 120061 |
| Hexadecimal (base 16) | A031 |
| Base 3 | 2002020212 |
| As time | 41009 seconds = 11 h 23 min 29 s |
Is 41009 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 3) | 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 5) | 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 1) | 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 41009 a prime number?
No. 41009 = 23 × 1783, so it is divisible by 23.
What are the factors of 41009?
1, 23, 1783, 41009.
What is 41009 in binary?
1010000000110001 (hexadecimal A031, octal 120061).
What is the square root of 41009?
About 202.5068.
Is 41009 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 41009?
41009 is a semiprime: 23 × 1783, the product of two primes.