39399128 has 16 divisors (see below), whose sum is σ = 74164680. Its totient is φ = 19621888.

The previous prime is 39399127. The next prime is 39399131. The reversal of 39399128 is 82199393.

39399128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39399121) 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 3 ways as a sum of consecutive naturals, for example, 7526 + ... + 11637.

Almost surely, 2^39399128 is an apocalyptic number.

It is an amenable number.

39399128 is a deficient number, since it is larger than the sum of its proper divisors (34765552).

39399128 is a wasteful number, since it uses less digits than its factorization.

39399128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19426 (or 19422 counting only the distinct ones).

The product of its digits is 104976, while the sum is 44.

The square root of 39399128 is about 6276.8724696301. The cubic root of 39399128 is about 340.2740811895.

The spelling of 39399128 in words is "thirty-nine million, three hundred ninety-nine thousand, one hundred twenty-eight".