85212844 has 12 divisors (see below), whose sum is σ = 149518600. Its totient is φ = 42493248.

The previous prime is 85212793. The next prime is 85212889. The reversal of 85212844 is 44821258.

It is a super-2 number, since 2×85212844² = 14522457565136672, which contains 22 as substring.

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, 26589 + ... + 29620.

Almost surely, 2^85212844 is an apocalyptic number.

It is an amenable number.

85212844 is a deficient number, since it is larger than the sum of its proper divisors (64305756).

85212844 is a wasteful number, since it uses less digits than its factorization.

85212844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56592 (or 56590 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 85212844 is about 9231.0803268090. The cubic root of 85212844 is about 440.0496569301.

The spelling of 85212844 in words is "eighty-five million, two hundred twelve thousand, eight hundred forty-four".