85212444 has 12 divisors (see below), whose sum is σ = 198829064. Its totient is φ = 28404144.

The previous prime is 85212433. The next prime is 85212451. The reversal of 85212444 is 44421258.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×85212444² = 14522321224906272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550507 + ... + 3550530.

Almost surely, 2^85212444 is an apocalyptic number.

It is an amenable number.

85212444 is an abundant number, since it is smaller than the sum of its proper divisors (113616620).

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

85212444 is a wasteful number, since it uses less digits than its factorization.

85212444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7101044 (or 7101042 counting only the distinct ones).

The product of its digits is 10240, while the sum is 30.

The square root of 85212444 is about 9231.0586608471. The cubic root of 85212444 is about 440.0489683792.

The spelling of 85212444 in words is "eighty-five million, two hundred twelve thousand, four hundred forty-four".