The number 40407
40407 is a composite number with 4 divisors. Its prime factorisation is 3 × 13469. Divisors (4): 1, 3, 13469, 40407.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 40407: a semiprime: 3 × 13469, the product of two primes.
- 2
40407 is composite. Its prime factorisation is
- 3
The divisors add up to 53880; without 40407 itself that is 13473, so 40407 is deficient (13473 is less than 40407). Euler's totient φ(40407) = 26936 numbers up to 40407 share no factor with it.
- 4
The digits of 40407 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 137 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40407 = 3 \times 13469 \]
40407 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 53880 |
| Euler totient φ(n) | 26936 |
| Square | 1632725649 |
| Cube | 65973545299143 |
| Square root | 201.014925 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 137 |
| Scientific notation | 4.0407 × |
40407 in other forms
| Form | Value |
|---|---|
| In words | forty thousand four hundred and seven |
| Binary (base 2) | 1001110111010111 |
| Octal (base 8) | 116727 |
| Hexadecimal (base 16) | 9DD7 |
| Base 3 | 2001102120 |
| As time | 40407 seconds = 11 h 13 min 27 s |
Is 40407 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 | Yes (40407 ÷ 3 = 13469) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | 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 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 40407 a prime number?
No. 40407 = 3 × 13469, so it is divisible by 3.
What are the factors of 40407?
1, 3, 13469, 40407.
What is 40407 in binary?
1001110111010111 (hexadecimal 9DD7, octal 116727).
What is the square root of 40407?
About 201.0149.
Is 40407 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 40407?
40407 is a semiprime: 3 × 13469, the product of two primes.