3971908 has 12 divisors (see below), whose sum is σ = 6976620. Its totient is φ = 1978592.

The previous prime is 3971899. The next prime is 3971911. The reversal of 3971908 is 8091793.

3971908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3810304 + 161604 = 1952^2 + 402^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523 + ... + 2866.

It is an arithmetic number, because the mean of its divisors is an integer number (581385).

Almost surely, 2^3971908 is an apocalyptic number.

It is an amenable number.

3971908 is a deficient number, since it is larger than the sum of its proper divisors (3004712).

3971908 is a wasteful number, since it uses less digits than its factorization.

3971908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686 (or 3684 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 3971908 is about 1992.9646258777. The cubic root of 3971908 is about 158.3676212600.

Subtracting 3971908 from its reverse (8091793), we obtain a triangular number (4119885 = T₂₈₇₀).

The spelling of 3971908 in words is "three million, nine hundred seventy-one thousand, nine hundred eight".