509329868 has 12 divisors (see below), whose sum is σ = 891772560. Its totient is φ = 254537712.

The previous prime is 509329861. The next prime is 509329927. The reversal of 509329868 is 868923905.

It is not an unprimeable number, because it can be changed into a prime (509329861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22496 + ... + 39047.

It is an arithmetic number, because the mean of its divisors is an integer number (74314380).

Almost surely, 2^509329868 is an apocalyptic number.

It is an amenable number.

509329868 is a deficient number, since it is larger than the sum of its proper divisors (382442692).

509329868 is a wasteful number, since it uses less digits than its factorization.

509329868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63616 (or 63614 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 509329868 is about 22568.3377323187. The cubic root of 509329868 is about 798.6068816849.

The spelling of 509329868 in words is "five hundred nine million, three hundred twenty-nine thousand, eight hundred sixty-eight".