3943684 has 6 divisors (see below), whose sum is σ = 6901454. Its totient is φ = 1971840.

The previous prime is 3943673. The next prime is 3943691. The reversal of 3943684 is 4863493.

It can be written as a sum of positive squares in only one way, i.e., 2310400 + 1633284 = 1520^2 + 1278^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492957 + ... + 492964.

Almost surely, 2^3943684 is an apocalyptic number.

It is an amenable number.

3943684 is a deficient number, since it is larger than the sum of its proper divisors (2957770).

3943684 is a wasteful number, since it uses less digits than its factorization.

3943684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985925 (or 985923 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 3943684 is about 1985.8710935003. The cubic root of 3943684 is about 157.9916141466.

The spelling of 3943684 in words is "three million, nine hundred forty-three thousand, six hundred eighty-four".