40045912 has 16 divisors (see below), whose sum is σ = 75165840. Its totient is φ = 20001696.

The previous prime is 40045909. The next prime is 40045919. The reversal of 40045912 is 21954004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40045919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7738 + ... + 11830.

It is an arithmetic number, because the mean of its divisors is an integer number (4697865).

Almost surely, 2^40045912 is an apocalyptic number.

It is an amenable number.

40045912 is a deficient number, since it is larger than the sum of its proper divisors (35119928).

40045912 is a wasteful number, since it uses less digits than its factorization.

40045912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322 (or 5318 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 40045912 is about 6328.1839417008. The cubic root of 40045912 is about 342.1259866645.

Adding to 40045912 its reverse (21954004), we get a palindrome (61999916).

The spelling of 40045912 in words is "forty million, forty-five thousand, nine hundred twelve".