809774512 has 20 divisors (see below), whose sum is σ = 1594660336. Its totient is φ = 398249280.

The previous prime is 809774461. The next prime is 809774513. The reversal of 809774512 is 215477908.

It is not an unprimeable number, because it can be changed into a prime (809774513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413868 + ... + 415819.

Almost surely, 2^809774512 is an apocalyptic number.

It is an amenable number.

809774512 is a deficient number, since it is larger than the sum of its proper divisors (784885824).

809774512 is a wasteful number, since it uses less digits than its factorization.

809774512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829756 (or 829750 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 809774512 is about 28456.5372454204. The cubic root of 809774512 is about 932.0832445431.

The spelling of 809774512 in words is "eight hundred nine million, seven hundred seventy-four thousand, five hundred twelve".