39285138 has 16 divisors (see below), whose sum is σ = 80242560. Its totient is φ = 12816336.

The previous prime is 39285131. The next prime is 39285139. The reversal of 39285138 is 83158293.

39285138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 39285096 and 39285105.

It is not an unprimeable number, because it can be changed into a prime (39285131) 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 7 ways as a sum of consecutive naturals, for example, 69373 + ... + 69936.

It is an arithmetic number, because the mean of its divisors is an integer number (5015160).

Almost surely, 2^39285138 is an apocalyptic number.

39285138 is an abundant number, since it is smaller than the sum of its proper divisors (40957422).

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

39285138 is a wasteful number, since it uses less digits than its factorization.

39285138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139361.

The product of its digits is 51840, while the sum is 39.

The square root of 39285138 is about 6267.7857334150. The cubic root of 39285138 is about 339.9456026006.

The spelling of 39285138 in words is "thirty-nine million, two hundred eighty-five thousand, one hundred thirty-eight".