39648906 has 32 divisors (see below), whose sum is σ = 96120000. Its totient is φ = 12014640.

The previous prime is 39648901. The next prime is 39648971. The reversal of 39648906 is 60984693.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (39648901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32781 + ... + 33968.

It is an arithmetic number, because the mean of its divisors is an integer number (3003750).

Almost surely, 2^39648906 is an apocalyptic number.

39648906 is an abundant number, since it is smaller than the sum of its proper divisors (56471094).

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

39648906 is a wasteful number, since it uses less digits than its factorization.

39648906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66771 (or 66765 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 39648906 is about 6296.7377267915. The cubic root of 39648906 is about 340.9916436006.

The spelling of 39648906 in words is "thirty-nine million, six hundred forty-eight thousand, nine hundred six".