3992788 has 6 divisors (see below), whose sum is σ = 6987386. Its totient is φ = 1996392.

The previous prime is 3992771. The next prime is 3992797. The reversal of 3992788 is 8872993.

It can be written as a sum of positive squares in only one way, i.e., 3992004 + 784 = 1998^2 + 28^2 .

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, 499095 + ... + 499102.

Almost surely, 2^3992788 is an apocalyptic number.

It is an amenable number.

3992788 is a deficient number, since it is larger than the sum of its proper divisors (2994598).

3992788 is a wasteful number, since it uses less digits than its factorization.

3992788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998201 (or 998199 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 3992788 is about 1998.1961865643. The cubic root of 3992788 is about 158.6446449990.

The spelling of 3992788 in words is "three million, nine hundred ninety-two thousand, seven hundred eighty-eight".