The number 1499
1499 is the 239th prime number. Its only divisors are 1 and 1499.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 1499: the 239th prime number.
- 2
1499 is prime, so its only factors are 1 and 1499. It is the 239th prime; the next prime is 1511 and the one before is 1493.
- 3
The divisors add up to 1500; without 1499 itself that is 1, so 1499 is deficient (1 is less than 1499). Euler's totient φ(1499) = 1498 numbers up to 1499 share no factor with it.
- 4
The digits of 1499 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 47 steps to reach 1.
1499 at a glance
| Property | Value |
|---|---|
| Type | prime |
| Number of divisors | 2 |
| Sum of divisors | 1500 |
| Euler totient φ(n) | 1498 |
| Square | 2247001 |
| Cube | 3368254499 |
| Square root | 38.716921 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 47 |
| Scientific notation | 1.499 × |
1499 in other forms
| Form | Value |
|---|---|
| In words | one thousand four hundred and ninety-nine |
| Roman numerals | MCDXCIX |
| Binary (base 2) | 10111011011 |
| Octal (base 8) | 2733 |
| Hexadecimal (base 16) | 5DB |
| Base 3 | 2001112 |
| As time | 1499 seconds = 24 min 59 s |
Is 1499 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 1) | 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 5) | 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 3) | 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 1499 a prime number?
Yes. 1499 is divisible only by 1 and itself.
What are the factors of 1499?
1, 1499.
What is 1499 in binary?
10111011011 (hexadecimal 5DB, octal 2733).
What is the square root of 1499?
About 38.7169.
What is 1499 in Roman numerals?
MCDXCIX.
Is 1499 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 1499?
1499 is the 239th prime number.