40004038 has 12 divisors (see below), whose sum is σ = 62730108. Its totient is φ = 19131860.

The previous prime is 40004023. The next prime is 40004039. The reversal of 40004038 is 83040004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40004039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17848 + ... + 19963.

It is an arithmetic number, because the mean of its divisors is an integer number (5227509).

Almost surely, 2^40004038 is an apocalyptic number.

40004038 is a deficient number, since it is larger than the sum of its proper divisors (22726070).

40004038 is a wasteful number, since it uses less digits than its factorization.

40004038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37859 (or 37836 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40004038 is about 6324.8745442103. The cubic root of 40004038 is about 342.0066970862.

The spelling of 40004038 in words is "forty million, four thousand, thirty-eight".