808915964 has 12 divisors (see below), whose sum is σ = 1498873824. Its totient is φ = 380666304.

The previous prime is 808915963. The next prime is 808915979. The reversal of 808915964 is 469519808.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808915963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5947844 + ... + 5947979.

It is an arithmetic number, because the mean of its divisors is an integer number (124906152).

Almost surely, 2^808915964 is an apocalyptic number.

It is an amenable number.

808915964 is a deficient number, since it is larger than the sum of its proper divisors (689957860).

808915964 is a wasteful number, since it uses less digits than its factorization.

808915964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11895844 (or 11895842 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 808915964 is about 28441.4479940808. The cubic root of 808915964 is about 931.7537202238.

The spelling of 808915964 in words is "eight hundred eight million, nine hundred fifteen thousand, nine hundred sixty-four".