7936438 has 4 divisors (see below), whose sum is σ = 11904660. Its totient is φ = 3968218.

The previous prime is 7936429. The next prime is 7936441. The reversal of 7936438 is 8346397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8346397 = 83 ⋅100559.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 7936438.

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 as a sum of consecutive naturals, namely, 1984108 + ... + 1984111.

It is an arithmetic number, because the mean of its divisors is an integer number (2976165).

Almost surely, 2^7936438 is an apocalyptic number.

7936438 is a deficient number, since it is larger than the sum of its proper divisors (3968222).

7936438 is a wasteful number, since it uses less digits than its factorization.

7936438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968221.

The product of its digits is 108864, while the sum is 40.

The square root of 7936438 is about 2817.1684365689. The cubic root of 7936438 is about 199.4689076194.

The spelling of 7936438 in words is "seven million, nine hundred thirty-six thousand, four hundred thirty-eight".