The number 88139
88139 is a composite number with 4 divisors. Its prime factorisation is 53 × 1663. Divisors (4): 1, 53, 1663, 88139.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 88139: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 53 × 1663, the product of two primes.
- 2
88139 is composite. Its prime factorisation is
- 3
The divisors add up to 89856; without 88139 itself that is 1717, so 88139 is deficient (1717 is less than 88139). Euler's totient φ(88139) = 86424 numbers up to 88139 share no factor with it.
- 4
The digits of 88139 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 133 steps to reach 1.
LaTeX source of the formulas on this page
\[ 88139 = 53 \times 1663 \]
88139 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 89856 |
| Euler totient φ(n) | 86424 |
| Square | 7768483321 |
| Cube | 684706351429619 |
| Square root | 296.882131 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 133 |
| Scientific notation | 8.8139 × |
88139 in other forms
| Form | Value |
|---|---|
| In words | eighty-eight thousand one hundred and thirty-nine |
| Binary (base 2) | 10101100001001011 |
| Octal (base 8) | 254113 |
| Hexadecimal (base 16) | 1584B |
| Base 3 | 11110220102 |
| As time | 88139 seconds = 24 h 28 min 59 s |
Is 88139 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 3) | 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 7) | 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 88139 a prime number?
No. 88139 = 53 × 1663, so it is divisible by 53.
What are the factors of 88139?
1, 53, 1663, 88139.
What is 88139 in binary?
10101100001001011 (hexadecimal 1584B, octal 254113).
What is the square root of 88139?
About 296.8821.
Is 88139 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 88139?
88139 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 53 × 1663, the product of two primes.