40038938 has 16 divisors (see below), whose sum is σ = 61157760. Its totient is φ = 19656000.

The previous prime is 40038923. The next prime is 40038979. The reversal of 40038938 is 83983004.

It is a junction number, because it is equal to n+sod(n) for n = 40038898 and 40038907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32738 + ... + 33938.

It is an arithmetic number, because the mean of its divisors is an integer number (3822360).

Almost surely, 2^40038938 is an apocalyptic number.

40038938 is a deficient number, since it is larger than the sum of its proper divisors (21118822).

40038938 is a wasteful number, since it uses less digits than its factorization.

40038938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 40038938 is about 6327.6328907420. The cubic root of 40038938 is about 342.1061250853.

The spelling of 40038938 in words is "forty million, thirty-eight thousand, nine hundred thirty-eight".