85505394 has 32 divisors (see below), whose sum is σ = 185008320. Its totient is φ = 26188992.

The previous prime is 85505389. The next prime is 85505419. The reversal of 85505394 is 49350558.

It is a super-2 number, since 2×85505394² = 14622344806190472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 15469 + ... + 20255.

It is an arithmetic number, because the mean of its divisors is an integer number (5781510).

Almost surely, 2^85505394 is an apocalyptic number.

85505394 is an abundant number, since it is smaller than the sum of its proper divisors (99502926).

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

85505394 is a wasteful number, since it uses less digits than its factorization.

85505394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034.

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 85505394 is about 9246.9126739685. The cubic root of 85505394 is about 440.5526698436.

The spelling of 85505394 in words is "eighty-five million, five hundred five thousand, three hundred ninety-four".