509894812 has 24 divisors (see below), whose sum is σ = 1027134080. Its totient is φ = 216952560.

The previous prime is 509894809. The next prime is 509894867. The reversal of 509894812 is 218498905.

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, 61614 + ... + 69397.

Almost surely, 2^509894812 is an apocalyptic number.

It is an amenable number.

509894812 is an abundant number, since it is smaller than the sum of its proper divisors (517239268).

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

509894812 is a wasteful number, since it uses less digits than its factorization.

509894812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131161 (or 131159 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 509894812 is about 22580.8505597110. The cubic root of 509894812 is about 798.9020417155.

The spelling of 509894812 in words is "five hundred nine million, eight hundred ninety-four thousand, eight hundred twelve".