40085212 has 24 divisors (see below), whose sum is σ = 74143440. Its totient is φ = 18910080.

The previous prime is 40085197. The next prime is 40085233. The reversal of 40085212 is 21258004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20418 + ... + 22294.

It is an arithmetic number, because the mean of its divisors is an integer number (3089310).

Almost surely, 2^40085212 is an apocalyptic number.

It is an amenable number.

40085212 is a deficient number, since it is larger than the sum of its proper divisors (34058228).

40085212 is a wasteful number, since it uses less digits than its factorization.

40085212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181 (or 2179 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 40085212 is about 6331.2883365078. The cubic root of 40085212 is about 342.2378678747.

The spelling of 40085212 in words is "forty million, eighty-five thousand, two hundred twelve".