3992404 has 12 divisors (see below), whose sum is σ = 7524244. Its totient is φ = 1842624.

The previous prime is 3992393. The next prime is 3992407. The reversal of 3992404 is 4042993.

It can be written as a sum of positive squares in 2 ways, for example, as 562500 + 3429904 = 750^2 + 1852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992407) by changing a digit.

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, 38337 + ... + 38440.

Almost surely, 2^3992404 is an apocalyptic number.

It is an amenable number.

3992404 is a deficient number, since it is larger than the sum of its proper divisors (3531840).

3992404 is a wasteful number, since it uses less digits than its factorization.

3992404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76794 (or 76792 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 3992404 is about 1998.1000975927. The cubic root of 3992404 is about 158.6395590376.

The spelling of 3992404 in words is "three million, nine hundred ninety-two thousand, four hundred four".