The number 40197
40197 is a composite number with 4 divisors. Its prime factorisation is 3 × 13399. Divisors (4): 1, 3, 13399, 40197.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 40197: a semiprime: 3 × 13399, the product of two primes.
- 2
40197 is composite. Its prime factorisation is
- 3
The divisors add up to 53600; without 40197 itself that is 13403, so 40197 is deficient (13403 is less than 40197). Euler's totient φ(40197) = 26796 numbers up to 40197 share no factor with it.
- 4
The digits of 40197 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 137 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40197 = 3 \times 13399 \]
40197 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 53600 |
| Euler totient φ(n) | 26796 |
| Square | 1615798809 |
| Cube | 64950264725373 |
| Square root | 200.491895 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 137 |
| Scientific notation | 4.0197 × |
40197 in other forms
| Form | Value |
|---|---|
| In words | forty thousand one hundred and ninety-seven |
| Binary (base 2) | 1001110100000101 |
| Octal (base 8) | 116405 |
| Hexadecimal (base 16) | 9D05 |
| Base 3 | 2001010210 |
| As time | 40197 seconds = 11 h 9 min 57 s |
Is 40197 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 (40197 ÷ 3 = 13399) | 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 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | 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 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 40197 a prime number?
No. 40197 = 3 × 13399, so it is divisible by 3.
What are the factors of 40197?
1, 3, 13399, 40197.
What is 40197 in binary?
1001110100000101 (hexadecimal 9D05, octal 116405).
What is the square root of 40197?
About 200.4919.
Is 40197 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 40197?
40197 is a semiprime: 3 × 13399, the product of two primes.