The number 40249
40249 is a composite number with 4 divisors. Its prime factorisation is 11 × 3659. Divisors (4): 1, 11, 3659, 40249.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 40249: a semiprime: 11 × 3659, the product of two primes.
- 2
40249 is composite. Its prime factorisation is
- 3
The divisors add up to 43920; without 40249 itself that is 3671, so 40249 is deficient (3671 is less than 40249). Euler's totient φ(40249) = 36580 numbers up to 40249 share no factor with it.
- 4
The digits of 40249 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 106 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40249 = 11 \times 3659 \]
40249 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43920 |
| Euler totient φ(n) | 36580 |
| Square | 1619982001 |
| Cube | 65202655558249 |
| Square root | 200.621534 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 106 |
| Scientific notation | 4.0249 × |
40249 in other forms
| Form | Value |
|---|---|
| In words | forty thousand two hundred and forty-nine |
| Binary (base 2) | 1001110100111001 |
| Octal (base 8) | 116471 |
| Hexadecimal (base 16) | 9D39 |
| Base 3 | 2001012201 |
| As time | 40249 seconds = 11 h 10 min 49 s |
Is 40249 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 6) | 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 1) | 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 | Yes (40249 ÷ 11 = 3659) | 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 40249 a prime number?
No. 40249 = 11 × 3659, so it is divisible by 11.
What are the factors of 40249?
1, 11, 3659, 40249.
What is 40249 in binary?
1001110100111001 (hexadecimal 9D39, octal 116471).
What is the square root of 40249?
About 200.6215.
Is 40249 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 40249?
40249 is a semiprime: 11 × 3659, the product of two primes.