3945684 has 24 divisors (see below), whose sum is σ = 9364320. Its totient is φ = 1292704.

The previous prime is 3945677. The next prime is 3945701. The reversal of 3945684 is 4865493.

3945684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2079 + ... + 3494.

It is an arithmetic number, because the mean of its divisors is an integer number (390180).

Almost surely, 2^3945684 is an apocalyptic number.

It is an amenable number.

3945684 is an abundant number, since it is smaller than the sum of its proper divisors (5418636).

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

3945684 is a wasteful number, since it uses less digits than its factorization.

3945684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639 (or 5637 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 3945684 is about 1986.3745870304. The cubic root of 3945684 is about 158.0183175900.

The spelling of 3945684 in words is "three million, nine hundred forty-five thousand, six hundred eighty-four".