809431968924 has 48 divisors (see below), whose sum is σ = 2098609443840. Its totient is φ = 269800098480.

The previous prime is 809431968901. The next prime is 809431968941. The reversal of 809431968924 is 429869134908.

It is a super-2 number, since 2×809431968924² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2922069 + ... + 3187059.

It is an arithmetic number, because the mean of its divisors is an integer number (43721030080).

Almost surely, 2^809431968924 is an apocalyptic number.

It is an amenable number.

809431968924 is an abundant number, since it is smaller than the sum of its proper divisors (1289177474916).

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

809431968924 is a wasteful number, since it uses less digits than its factorization.

809431968924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293287 (or 293279 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 809431968924 in words is "eight hundred nine billion, four hundred thirty-one million, nine hundred sixty-eight thousand, nine hundred twenty-four".