3946871 has 4 divisors (see below), whose sum is σ = 4083000. Its totient is φ = 3810744.

The previous prime is 3946853. The next prime is 3946879. The reversal of 3946871 is 1786493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1786493 = 41 ⋅43573.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3946871 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 (3946879) 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, 68021 + ... + 68078.

It is an arithmetic number, because the mean of its divisors is an integer number (1020750).

Almost surely, 2^3946871 is an apocalyptic number.

3946871 is a deficient number, since it is larger than the sum of its proper divisors (136129).

3946871 is a wasteful number, since it uses less digits than its factorization.

3946871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136128.

The product of its digits is 36288, while the sum is 38.

The square root of 3946871 is about 1986.6733501006. The cubic root of 3946871 is about 158.0341618169.

The spelling of 3946871 in words is "three million, nine hundred forty-six thousand, eight hundred seventy-one".