3992668 has 6 divisors (see below), whose sum is σ = 6987176. Its totient is φ = 1996332.

The previous prime is 3992627. The next prime is 3992683. The reversal of 3992668 is 8662993.

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, 499080 + ... + 499087.

Almost surely, 2^3992668 is an apocalyptic number.

It is an amenable number.

3992668 is a deficient number, since it is larger than the sum of its proper divisors (2994508).

3992668 is a wasteful number, since it uses less digits than its factorization.

3992668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998171 (or 998169 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 3992668 is about 1998.1661592570. The cubic root of 3992668 is about 158.6430556711.

It can be divided in two parts, 399266 and 8, that multiplied together give a triangular number (3194128 = T₂₅₂₇).

The spelling of 3992668 in words is "three million, nine hundred ninety-two thousand, six hundred sixty-eight".