85449864 has 16 divisors (see below), whose sum is σ = 213624720. Its totient is φ = 28483280.

The previous prime is 85449851. The next prime is 85449887. The reversal of 85449864 is 46894458.

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, 1780182 + ... + 1780229.

It is an arithmetic number, because the mean of its divisors is an integer number (13351545).

Almost surely, 2^85449864 is an apocalyptic number.

It is an amenable number.

85449864 is an abundant number, since it is smaller than the sum of its proper divisors (128174856).

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

85449864 is a wasteful number, since it uses less digits than its factorization.

85449864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560420 (or 3560416 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 48.

The square root of 85449864 is about 9243.9095625174. The cubic root of 85449864 is about 440.4572794189.

The spelling of 85449864 in words is "eighty-five million, four hundred forty-nine thousand, eight hundred sixty-four".