The number 4443
4443 is a composite number with 4 divisors. Its prime factorisation is 3 × 1481. Divisors (4): 1, 3, 1481, 4443.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 4443: a semiprime: 3 × 1481, the product of two primes.
- 2
4443 is composite. Its prime factorisation is
- 3
The divisors add up to 5928; without 4443 itself that is 1485, so 4443 is deficient (1485 is less than 4443). Euler's totient φ(4443) = 2960 numbers up to 4443 share no factor with it.
- 4
The digits of 4443 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 95 steps to reach 1.
LaTeX source of the formulas on this page
\[ 4443 = 3 \times 1481 \]
4443 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 5928 |
| Euler totient φ(n) | 2960 |
| Square | 19740249 |
| Cube | 87705926307 |
| Square root | 66.655832 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 95 |
| Scientific notation | 4.443 × |
4443 in other forms
| Form | Value |
|---|---|
| In words | four thousand four hundred and forty-three |
| Binary (base 2) | 1000101011011 |
| Octal (base 8) | 10533 |
| Hexadecimal (base 16) | 115B |
| Base 3 | 20002120 |
| As time | 4443 seconds = 1 h 14 min 3 s |
Is 4443 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 (4443 ÷ 3 = 1481) | 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 3) | 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 5) | 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 3) | 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 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 4443 a prime number?
No. 4443 = 3 × 1481, so it is divisible by 3.
What are the factors of 4443?
1, 3, 1481, 4443.
What is 4443 in binary?
1000101011011 (hexadecimal 115B, octal 10533).
What is the square root of 4443?
About 66.6558.
Is 4443 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 4443?
4443 is a semiprime: 3 × 1481, the product of two primes.