3992642 has 4 divisors (see below), whose sum is σ = 5988966. Its totient is φ = 1996320.

The previous prime is 3992627. The next prime is 3992683. The reversal of 3992642 is 2462993.

3992642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3964081 + 28561 = 1991^2 + 169^2 .

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 as a sum of consecutive naturals, namely, 998159 + ... + 998162.

Almost surely, 2^3992642 is an apocalyptic number.

3992642 is a deficient number, since it is larger than the sum of its proper divisors (1996324).

3992642 is a wasteful number, since it uses less digits than its factorization.

3992642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996323.

The product of its digits is 23328, while the sum is 35.

The square root of 3992642 is about 1998.1596532810. The cubic root of 3992642 is about 158.6427113125.

The spelling of 3992642 in words is "three million, nine hundred ninety-two thousand, six hundred forty-two".