3925638 has 32 divisors (see below), whose sum is σ = 8803200. Its totient is φ = 1296648.

The previous prime is 3925637. The next prime is 3925667. The reversal of 3925638 is 8365293.

3925638 is a `hidden beast` number, since 3 + 92 + 563 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925631) 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 15 ways as a sum of consecutive naturals, for example, 7245 + ... + 7767.

It is an arithmetic number, because the mean of its divisors is an integer number (275100).

Almost surely, 2^3925638 is an apocalyptic number.

3925638 is an abundant number, since it is smaller than the sum of its proper divisors (4877562).

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

3925638 is a wasteful number, since it uses less digits than its factorization.

3925638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 667 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 3925638 is about 1981.3222857476. The cubic root of 3925638 is about 157.7502597354.

The spelling of 3925638 in words is "three million, nine hundred twenty-five thousand, six hundred thirty-eight".