3990782 has 4 divisors (see below), whose sum is σ = 5986176. Its totient is φ = 1995390.

The previous prime is 3990773. The next prime is 3990827. The reversal of 3990782 is 2870993.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997694 + ... + 997697.

It is an arithmetic number, because the mean of its divisors is an integer number (1496544).

Almost surely, 2^3990782 is an apocalyptic number.

3990782 is a deficient number, since it is larger than the sum of its proper divisors (1995394).

3990782 is a wasteful number, since it uses less digits than its factorization.

3990782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995393.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 3990782 is about 1997.6941707879. The cubic root of 3990782 is about 158.6180725499.

The spelling of 3990782 in words is "three million, nine hundred ninety thousand, seven hundred eighty-two".