3871406 has 32 divisors (see below), whose sum is σ = 7561728. Its totient is φ = 1441440.

The previous prime is 3871397. The next prime is 3871423. The reversal of 3871406 is 6041783.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2996 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (236304).

Almost surely, 2^3871406 is an apocalyptic number.

3871406 is a deficient number, since it is larger than the sum of its proper divisors (3690322).

3871406 is a wasteful number, since it uses less digits than its factorization.

3871406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 3871406 is about 1967.5888798222. The cubic root of 3871406 is about 157.0204579343.

The spelling of 3871406 in words is "three million, eight hundred seventy-one thousand, four hundred six".