3920782 has 4 divisors (see below), whose sum is σ = 5881176. Its totient is φ = 1960390.

The previous prime is 3920759. The next prime is 3920797. The reversal of 3920782 is 2870293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2870293 = 43 ⋅66751.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 980194 + ... + 980197.

It is an arithmetic number, because the mean of its divisors is an integer number (1470294).

Almost surely, 2^3920782 is an apocalyptic number.

3920782 is a deficient number, since it is larger than the sum of its proper divisors (1960394).

3920782 is a wasteful number, since it uses less digits than its factorization.

3920782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960393.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3920782 is about 1980.0964622967. The cubic root of 3920782 is about 157.6851873964.

The spelling of 3920782 in words is "three million, nine hundred twenty thousand, seven hundred eighty-two".