7940404 has 12 divisors (see below), whose sum is σ = 14627200. Its totient is φ = 3761208.

The previous prime is 7940399. The next prime is 7940417. The reversal of 7940404 is 4040497.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52164 + ... + 52315.

Almost surely, 2^7940404 is an apocalyptic number.

It is an amenable number.

7940404 is a deficient number, since it is larger than the sum of its proper divisors (6686796).

7940404 is a wasteful number, since it uses less digits than its factorization.

7940404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104502 (or 104500 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 7940404 is about 2817.8722469267. The cubic root of 7940404 is about 199.5021283140.

The spelling of 7940404 in words is "seven million, nine hundred forty thousand, four hundred four".