3942885 has 16 divisors (see below), whose sum is σ = 6456384. Its totient is φ = 2053632.

The previous prime is 3942871. The next prime is 3942889. The reversal of 3942885 is 5882493.

It is a happy number.

It is not a de Polignac number, because 3942885 - 2⁹ = 3942373 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 2412 + ... + 3701.

It is an arithmetic number, because the mean of its divisors is an integer number (403524).

Almost surely, 2^3942885 is an apocalyptic number.

It is an amenable number.

3942885 is a deficient number, since it is larger than the sum of its proper divisors (2513499).

3942885 is a wasteful number, since it uses less digits than its factorization.

3942885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164.

The product of its digits is 69120, while the sum is 39.

The square root of 3942885 is about 1985.6699121455. The cubic root of 3942885 is about 157.9809435971.

It can be divided in two parts, 39 and 42885, that added together give a palindrome (42924).

The spelling of 3942885 in words is "three million, nine hundred forty-two thousand, eight hundred eighty-five".