3903638 has 4 divisors (see below), whose sum is σ = 5855460. Its totient is φ = 1951818.

The previous prime is 3903637. The next prime is 3903643. The reversal of 3903638 is 8363093.

It is a happy number.

3903638 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (3903631) 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, 975908 + ... + 975911.

It is an arithmetic number, because the mean of its divisors is an integer number (1463865).

Almost surely, 2^3903638 is an apocalyptic number.

3903638 is a deficient number, since it is larger than the sum of its proper divisors (1951822).

3903638 is a wasteful number, since it uses less digits than its factorization.

3903638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951821.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 3903638 is about 1975.7626375656. The cubic root of 3903638 is about 157.4550203295.

The spelling of 3903638 in words is "three million, nine hundred three thousand, six hundred thirty-eight".