40039004 has 12 divisors (see below), whose sum is σ = 73756200. Its totient is φ = 18965808.

The previous prime is 40039003. The next prime is 40039031. The reversal of 40039004 is 40093004.

40039004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40039003) 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 3 ways as a sum of consecutive naturals, for example, 263339 + ... + 263490.

It is an arithmetic number, because the mean of its divisors is an integer number (6146350).

Almost surely, 2^40039004 is an apocalyptic number.

It is an amenable number.

40039004 is a deficient number, since it is larger than the sum of its proper divisors (33717196).

40039004 is a wasteful number, since it uses less digits than its factorization.

40039004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526852 (or 526850 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40039004 is about 6327.6381059602. The cubic root of 40039004 is about 342.1063130606.

The spelling of 40039004 in words is "forty million, thirty-nine thousand, four".