85809808 has 40 divisors (see below), whose sum is σ = 195152192. Its totient is φ = 35779968.

The previous prime is 85809793. The next prime is 85809817. The reversal of 85809808 is 80890858.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6210 + ... + 14497.

Almost surely, 2^85809808 is an apocalyptic number.

It is an amenable number.

85809808 is an abundant number, since it is smaller than the sum of its proper divisors (109342384).

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

85809808 is a wasteful number, since it uses less digits than its factorization.

85809808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20759 (or 20753 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 46.

The square root of 85809808 is about 9263.3583542903. The cubic root of 85809808 is about 441.0748652129.

The spelling of 85809808 in words is "eighty-five million, eight hundred nine thousand, eight hundred eight".