999508799 has 2 divisors, whose sum is σ = 999508800. Its totient is φ = 999508798.

The previous prime is 999508759. The next prime is 999508801. The reversal of 999508799 is 997805999.

It is a strong prime.

It is an emirp because it is prime and its reverse (997805999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999508799 is a prime.

Together with 999508801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999508709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499754399 + 499754400.

It is an arithmetic number, because the mean of its divisors is an integer number (499754400).

Almost surely, 2^999508799 is an apocalyptic number.

999508799 is a deficient number, since it is larger than the sum of its proper divisors (1).

999508799 is an equidigital number, since it uses as much as digits as its factorization.

999508799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16533720, while the sum is 65.

The square root of 999508799 is about 31615.0090779680. The cubic root of 999508799 is about 999.8362395173.

The spelling of 999508799 in words is "nine hundred ninety-nine million, five hundred eight thousand, seven hundred ninety-nine".