The number 74009
74009 is a composite number with 4 divisors. Its prime factorisation is 13 × 5693. Divisors (4): 1, 13, 5693, 74009.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 74009: a semiprime: 13 × 5693, the product of two primes.
- 2
74009 is composite. Its prime factorisation is
- 3
The divisors add up to 79716; without 74009 itself that is 5707, so 74009 is deficient (5707 is less than 74009). Euler's totient φ(74009) = 68304 numbers up to 74009 share no factor with it.
- 4
The digits of 74009 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 117 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74009 = 13 \times 5693 \]
74009 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 79716 |
| Euler totient φ(n) | 68304 |
| Square | 5477332081 |
| Cube | 405371869982729 |
| Square root | 272.045952 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 117 |
| Scientific notation | 7.4009 × |
74009 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand and nine |
| Binary (base 2) | 10010000100011001 |
| Octal (base 8) | 220431 |
| Hexadecimal (base 16) | 12119 |
| Base 3 | 10202112002 |
| As time | 74009 seconds = 20 h 33 min 29 s |
Is 74009 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 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 5) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 74009 a prime number?
No. 74009 = 13 × 5693, so it is divisible by 13.
What are the factors of 74009?
1, 13, 5693, 74009.
What is 74009 in binary?
10010000100011001 (hexadecimal 12119, octal 220431).
What is the square root of 74009?
About 272.0460.
Is 74009 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 74009?
74009 is a semiprime: 13 × 5693, the product of two primes.