39398685 has 16 divisors (see below), whose sum is σ = 66356160. Its totient is φ = 19906560.

The previous prime is 39398659. The next prime is 39398687. The reversal of 39398685 is 58689393.

39398685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39398685 - 2¹⁰ = 39397661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39398687) 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, 68836 + ... + 69405.

It is an arithmetic number, because the mean of its divisors is an integer number (4147260).

Almost surely, 2^39398685 is an apocalyptic number.

It is an amenable number.

39398685 is a deficient number, since it is larger than the sum of its proper divisors (26957475).

39398685 is a wasteful number, since it uses less digits than its factorization.

39398685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138268.

The product of its digits is 1399680, while the sum is 51.

The square root of 39398685 is about 6276.8371812562. The cubic root of 39398685 is about 340.2728058483.

The spelling of 39398685 in words is "thirty-nine million, three hundred ninety-eight thousand, six hundred eighty-five".