3942886 has 4 divisors (see below), whose sum is σ = 5914332. Its totient is φ = 1971442.

The previous prime is 3942871. The next prime is 3942889. The reversal of 3942886 is 6882493.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985720 + ... + 985723.

It is an arithmetic number, because the mean of its divisors is an integer number (1478583).

Almost surely, 2^3942886 is an apocalyptic number.

3942886 is a deficient number, since it is larger than the sum of its proper divisors (1971446).

3942886 is a wasteful number, since it uses less digits than its factorization.

3942886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971445.

The product of its digits is 82944, while the sum is 40.

The square root of 3942886 is about 1985.6701639497. The cubic root of 3942886 is about 157.9809569529.

The spelling of 3942886 in words is "three million, nine hundred forty-two thousand, eight hundred eighty-six".