The number 43199
43199 is a composite number with 4 divisors. Its prime factorisation is 13 × 3323. Divisors (4): 1, 13, 3323, 43199.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 43199: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 13 × 3323, the product of two primes.
- 2
43199 is composite. Its prime factorisation is
- 3
The divisors add up to 46536; without 43199 itself that is 3337, so 43199 is deficient (3337 is less than 43199). Euler's totient φ(43199) = 39864 numbers up to 43199 share no factor with it.
- 4
The digits of 43199 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 163 steps to reach 1.
LaTeX source of the formulas on this page
\[ 43199 = 13 \times 3323 \]
43199 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 46536 |
| Euler totient φ(n) | 39864 |
| Square | 1866153601 |
| Cube | 80615969409599 |
| Square root | 207.843691 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 163 |
| Scientific notation | 4.3199 × |
43199 in other forms
| Form | Value |
|---|---|
| In words | forty-three thousand one hundred and ninety-nine |
| Binary (base 2) | 1010100010111111 |
| Octal (base 8) | 124277 |
| Hexadecimal (base 16) | A8BF |
| Base 3 | 2012020222 |
| As time | 43199 seconds = 11 h 59 min 59 s |
Is 43199 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 3) | 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 2) | 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 8) | 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 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 43199 a prime number?
No. 43199 = 13 × 3323, so it is divisible by 13.
What are the factors of 43199?
1, 13, 3323, 43199.
What is 43199 in binary?
1010100010111111 (hexadecimal A8BF, octal 124277).
What is the square root of 43199?
About 207.8437.
Is 43199 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 43199?
43199 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 13 × 3323, the product of two primes.