The number 4449
4449 is a composite number with 4 divisors. Its prime factorisation is 3 × 1483. Divisors (4): 1, 3, 1483, 4449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 4449: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 3 × 1483, the product of two primes.
- 2
4449 is composite. Its prime factorisation is
- 3
The divisors add up to 5936; without 4449 itself that is 1487, so 4449 is deficient (1487 is less than 4449). Euler's totient φ(4449) = 2964 numbers up to 4449 share no factor with it.
- 4
The digits of 4449 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 69 steps to reach 1.
LaTeX source of the formulas on this page
\[ 4449 = 3 \times 1483 \]
4449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 5936 |
| Euler totient φ(n) | 2964 |
| Square | 19793601 |
| Cube | 88061730849 |
| Square root | 66.700825 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 69 |
| Scientific notation | 4.449 × |
4449 in other forms
| Form | Value |
|---|---|
| In words | four thousand four hundred and forty-nine |
| Binary (base 2) | 1000101100001 |
| Octal (base 8) | 10541 |
| Hexadecimal (base 16) | 1161 |
| Base 3 | 20002210 |
| As time | 4449 seconds = 1 h 14 min 9 s |
Is 4449 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 (4449 ÷ 3 = 1483) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 3) | 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 5) | 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 4449 a prime number?
No. 4449 = 3 × 1483, so it is divisible by 3.
What are the factors of 4449?
1, 3, 1483, 4449.
What is 4449 in binary?
1000101100001 (hexadecimal 1161, octal 10541).
What is the square root of 4449?
About 66.7008.
Is 4449 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 4449?
4449 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 3 × 1483, the product of two primes.