85915894 has 4 divisors (see below), whose sum is σ = 128873844. Its totient is φ = 42957946.

The previous prime is 85915861. The next prime is 85915901. The reversal of 85915894 is 49851958.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21478972 + ... + 21478975.

It is an arithmetic number, because the mean of its divisors is an integer number (32218461).

Almost surely, 2^85915894 is an apocalyptic number.

85915894 is a deficient number, since it is larger than the sum of its proper divisors (42957950).

85915894 is a wasteful number, since it uses less digits than its factorization.

85915894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42957949.

The product of its digits is 518400, while the sum is 49.

The square root of 85915894 is about 9269.0826946360. The cubic root of 85915894 is about 441.2565561706.

The spelling of 85915894 in words is "eighty-five million, nine hundred fifteen thousand, eight hundred ninety-four".