509690172 has 24 divisors (see below), whose sum is σ = 1207029376. Its totient is φ = 167360688.

The previous prime is 509690119. The next prime is 509690183. The reversal of 509690172 is 271096905.

It is a self number, because there is not a number n which added to its sum of digits gives 509690172.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316168 + ... + 317775.

Almost surely, 2^509690172 is an apocalyptic number.

It is an amenable number.

509690172 is an abundant number, since it is smaller than the sum of its proper divisors (697339204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

509690172 is a wasteful number, since it uses less digits than its factorization.

509690172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634017 (or 634015 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 509690172 is about 22576.3188319088. The cubic root of 509690172 is about 798.7951509176.

The spelling of 509690172 in words is "five hundred nine million, six hundred ninety thousand, one hundred seventy-two".