3906871 has 4 divisors (see below), whose sum is σ = 3911544. Its totient is φ = 3902200.

The previous prime is 3906863. The next prime is 3906883. The reversal of 3906871 is 1786093.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3906871 - 2³ = 3906863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3906811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (977886).

Almost surely, 2^3906871 is an apocalyptic number.

3906871 is a deficient number, since it is larger than the sum of its proper divisors (4673).

3906871 is a wasteful number, since it uses less digits than its factorization.

3906871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 3906871 is about 1976.5806333160. The cubic root of 3906871 is about 157.4984765117.

The spelling of 3906871 in words is "three million, nine hundred six thousand, eight hundred seventy-one".