3992866 has 8 divisors (see below), whose sum is σ = 6012864. Its totient is φ = 1988580.

The previous prime is 3992843. The next prime is 3992873. The reversal of 3992866 is 6682993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3270 + ... + 4321.

It is an arithmetic number, because the mean of its divisors is an integer number (751608).

Almost surely, 2^3992866 is an apocalyptic number.

3992866 is a deficient number, since it is larger than the sum of its proper divisors (2019998).

3992866 is a wasteful number, since it uses less digits than its factorization.

3992866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856.

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

The square root of 3992866 is about 1998.2157040720. The cubic root of 3992866 is about 158.6456780451.

The spelling of 3992866 in words is "three million, nine hundred ninety-two thousand, eight hundred sixty-six".