85171404 has 24 divisors (see below), whose sum is σ = 199085040. Its totient is φ = 28340224.

The previous prime is 85171367. The next prime is 85171409. The reversal of 85171404 is 40417158.

It is not an unprimeable number, because it can be changed into a prime (85171409) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1132 + ... + 13100.

It is an arithmetic number, because the mean of its divisors is an integer number (8295210).

Almost surely, 2^85171404 is an apocalyptic number.

It is an amenable number.

85171404 is an abundant number, since it is smaller than the sum of its proper divisors (113913636).

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

85171404 is a wasteful number, since it uses less digits than its factorization.

85171404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12569 (or 12567 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 85171404 is about 9228.8354628306. The cubic root of 85171404 is about 439.9783116031.

The spelling of 85171404 in words is "eighty-five million, one hundred seventy-one thousand, four hundred four".