40012844 has 12 divisors (see below), whose sum is σ = 70296744. Its totient is φ = 19928064.

The previous prime is 40012793. The next prime is 40012853. The reversal of 40012844 is 44821004.

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, 18434 + ... + 20489.

It is an arithmetic number, because the mean of its divisors is an integer number (5858062).

Almost surely, 2^40012844 is an apocalyptic number.

It is an amenable number.

40012844 is a deficient number, since it is larger than the sum of its proper divisors (30283900).

40012844 is a wasteful number, since it uses less digits than its factorization.

40012844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39184 (or 39182 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 40012844 is about 6325.5706461947. The cubic root of 40012844 is about 342.0317903032.

Adding to 40012844 its reverse (44821004), we get a palindrome (84833848).

The spelling of 40012844 in words is "forty million, twelve thousand, eight hundred forty-four".