809953968 has 20 divisors (see below), whose sum is σ = 2092381208. Its totient is φ = 269984640.

The previous prime is 809953951. The next prime is 809953981. The reversal of 809953968 is 869359908.

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 3 ways as a sum of consecutive naturals, for example, 8436973 + ... + 8437068.

Almost surely, 2^809953968 is an apocalyptic number.

It is an amenable number.

809953968 is an abundant number, since it is smaller than the sum of its proper divisors (1282427240).

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

809953968 is a wasteful number, since it uses less digits than its factorization.

809953968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16874052 (or 16874046 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The square root of 809953968 is about 28459.6902302186. The cubic root of 809953968 is about 932.1520931644.

The spelling of 809953968 in words is "eight hundred nine million, nine hundred fifty-three thousand, nine hundred sixty-eight".