509898988 has 24 divisors (see below), whose sum is σ = 914593680. Its totient is φ = 248606400.

The previous prime is 509898979. The next prime is 509898997. The reversal of 509898988 is 889898905.

It is an interprime number because it is at equal distance from previous prime (509898979) and next prime (509898997).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118458 + ... + 122686.

It is an arithmetic number, because the mean of its divisors is an integer number (38108070).

Almost surely, 2^509898988 is an apocalyptic number.

It is an amenable number.

509898988 is a deficient number, since it is larger than the sum of its proper divisors (404694692).

509898988 is a wasteful number, since it uses less digits than its factorization.

509898988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977 (or 4975 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 64.

The square root of 509898988 is about 22580.9430272520. The cubic root of 509898988 is about 798.9042226921.

The spelling of 509898988 in words is "five hundred nine million, eight hundred ninety-eight thousand, nine hundred eighty-eight".