3946686 has 16 divisors (see below), whose sum is σ = 8357904. Its totient is φ = 1238144.

The previous prime is 3946681. The next prime is 3946721. The reversal of 3946686 is 6866493.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19245 + ... + 19448.

It is an arithmetic number, because the mean of its divisors is an integer number (522369).

Almost surely, 2^3946686 is an apocalyptic number.

3946686 is an abundant number, since it is smaller than the sum of its proper divisors (4411218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3946686 is a wasteful number, since it uses less digits than its factorization.

3946686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38715.

The product of its digits is 186624, while the sum is 42.

The square root of 3946686 is about 1986.6267893090. The cubic root of 3946686 is about 158.0316926223.

The spelling of 3946686 in words is "three million, nine hundred forty-six thousand, six hundred eighty-six".