40085444 has 24 divisors (see below), whose sum is σ = 81002880. Its totient is φ = 17001216.

The previous prime is 40085429. The next prime is 40085447. The reversal of 40085444 is 44458004.

40085444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40085447) 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, 4664 + ... + 10095.

It is an arithmetic number, because the mean of its divisors is an integer number (3375120).

Almost surely, 2^40085444 is an apocalyptic number.

It is an amenable number.

40085444 is an abundant number, since it is smaller than the sum of its proper divisors (40917436).

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

40085444 is a wasteful number, since it uses less digits than its factorization.

40085444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14867 (or 14865 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 40085444 is about 6331.3066581868. The cubic root of 40085444 is about 342.2385281268.

The spelling of 40085444 in words is "forty million, eighty-five thousand, four hundred forty-four".