3931868 has 6 divisors (see below), whose sum is σ = 6880776. Its totient is φ = 1965932.

The previous prime is 3931861. The next prime is 3931891. The reversal of 3931868 is 8681393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3931861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491480 + ... + 491487.

It is an arithmetic number, because the mean of its divisors is an integer number (1146796).

Almost surely, 2^3931868 is an apocalyptic number.

It is an amenable number.

3931868 is a deficient number, since it is larger than the sum of its proper divisors (2948908).

3931868 is a wasteful number, since it uses less digits than its factorization.

3931868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982971 (or 982969 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 3931868 is about 1982.8938448641. The cubic root of 3931868 is about 157.8336656838.

The spelling of 3931868 in words is "three million, nine hundred thirty-one thousand, eight hundred sixty-eight".