809475992 has 32 divisors (see below), whose sum is σ = 1640478000. Its totient is φ = 372242304.

The previous prime is 809475967. The next prime is 809476001. The reversal of 809475992 is 299574908.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14759 + ... + 42857.

Almost surely, 2^809475992 is an apocalyptic number.

It is an amenable number.

809475992 is an abundant number, since it is smaller than the sum of its proper divisors (831002008).

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

809475992 is a wasteful number, since it uses less digits than its factorization.

809475992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28395 (or 28391 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 809475992 is about 28451.2915699797. The cubic root of 809475992 is about 931.9686942643.

The spelling of 809475992 in words is "eight hundred nine million, four hundred seventy-five thousand, nine hundred ninety-two".