The number 89801
89801 is a composite number with 4 divisors. Its prime factorisation is 89 × 1009. Divisors (4): 1, 89, 1009, 89801.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 89801: a semiprime: 89 × 1009, the product of two primes.
- 2
89801 is composite. Its prime factorisation is
- 3
The divisors add up to 90900; without 89801 itself that is 1099, so 89801 is deficient (1099 is less than 89801). Euler's totient φ(89801) = 88704 numbers up to 89801 share no factor with it.
- 4
The digits of 89801 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 164 steps to reach 1.
LaTeX source of the formulas on this page
\[ 89801 = 89 \times 1009 \]
89801 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 90900 |
| Euler totient φ(n) | 88704 |
| Square | 8064219601 |
| Cube | 724174984389401 |
| Square root | 299.668150 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 164 |
| Scientific notation | 8.9801 × |
89801 in other forms
| Form | Value |
|---|---|
| In words | eighty-nine thousand eight hundred and one |
| Binary (base 2) | 10101111011001001 |
| Octal (base 8) | 257311 |
| Hexadecimal (base 16) | 15EC9 |
| Base 3 | 11120011222 |
| As time | 89801 seconds = 24 h 56 min 41 s |
Is 89801 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 1) | 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 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | 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 89801 a prime number?
No. 89801 = 89 × 1009, so it is divisible by 89.
What are the factors of 89801?
1, 89, 1009, 89801.
What is 89801 in binary?
10101111011001001 (hexadecimal 15EC9, octal 257311).
What is the square root of 89801?
About 299.6681.
Is 89801 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 89801?
89801 is a semiprime: 89 × 1009, the product of two primes.