3971906 has 8 divisors (see below), whose sum is σ = 6150144. Its totient is φ = 1921860.

The previous prime is 3971899. The next prime is 3971911. The reversal of 3971906 is 6091793.

3971906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 31970 + ... + 32093.

It is an arithmetic number, because the mean of its divisors is an integer number (768768).

Almost surely, 2^3971906 is an apocalyptic number.

3971906 is a deficient number, since it is larger than the sum of its proper divisors (2178238).

3971906 is a wasteful number, since it uses less digits than its factorization.

3971906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64096.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 3971906 is about 1992.9641241126. The cubic root of 3971906 is about 158.3675946787.

The spelling of 3971906 in words is "three million, nine hundred seventy-one thousand, nine hundred six".