3983638 has 4 divisors (see below), whose sum is σ = 5975460. Its totient is φ = 1991818.

The previous prime is 3983633. The next prime is 3983641. The reversal of 3983638 is 8363893.

3983638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3983638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3983633) by changing a digit.

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 as a sum of consecutive naturals, namely, 995908 + ... + 995911.

It is an arithmetic number, because the mean of its divisors is an integer number (1493865).

Almost surely, 2^3983638 is an apocalyptic number.

3983638 is a deficient number, since it is larger than the sum of its proper divisors (1991822).

3983638 is a wasteful number, since it uses less digits than its factorization.

3983638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991821.

The product of its digits is 93312, while the sum is 40.

The square root of 3983638 is about 1995.9053083751. The cubic root of 3983638 is about 158.5233672720.

The spelling of 3983638 in words is "three million, nine hundred eighty-three thousand, six hundred thirty-eight".