7940038 has 8 divisors (see below), whose sum is σ = 11924640. Its totient is φ = 3965160.

The previous prime is 7940021. The next prime is 7940047. The reversal of 7940038 is 8300497.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7939991 and 7940009.

It is a congruent number.

It is an unprimeable number.

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, 168 + ... + 3988.

It is an arithmetic number, because the mean of its divisors is an integer number (1490580).

Almost surely, 2^7940038 is an apocalyptic number.

7940038 is a deficient number, since it is larger than the sum of its proper divisors (3984602).

7940038 is a wasteful number, since it uses less digits than its factorization.

7940038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4862.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 7940038 is about 2817.8073035607. The cubic root of 7940038 is about 199.4990630249.

The spelling of 7940038 in words is "seven million, nine hundred forty thousand, thirty-eight".