85109994 has 16 divisors (see below), whose sum is σ = 189133440. Its totient is φ = 28369980.

The previous prime is 85109993. The next prime is 85110013. The reversal of 85109994 is 49990158.

It is a super-2 number, since 2×85109994² = 14487422157360072, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85109993) 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, 788002 + ... + 788109.

It is an arithmetic number, because the mean of its divisors is an integer number (11820840).

Almost surely, 2^85109994 is an apocalyptic number.

85109994 is an abundant number, since it is smaller than the sum of its proper divisors (104023446).

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

85109994 is a wasteful number, since it uses less digits than its factorization.

85109994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576122 (or 1576116 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 85109994 is about 9225.5077909024. The cubic root of 85109994 is about 439.8725422831.

The spelling of 85109994 in words is "eighty-five million, one hundred nine thousand, nine hundred ninety-four".