39685713 has 16 divisors (see below), whose sum is σ = 53778816. Its totient is φ = 26028800.

The previous prime is 39685691. The next prime is 39685727. The reversal of 39685713 is 31758693.

39685713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 39685713 - 2²¹ = 37588561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39685733) 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, 56263 + ... + 56963.

It is an arithmetic number, because the mean of its divisors is an integer number (3361176).

Almost surely, 2^39685713 is an apocalyptic number.

It is an amenable number.

39685713 is a deficient number, since it is larger than the sum of its proper divisors (14093103).

39685713 is a wasteful number, since it uses less digits than its factorization.

39685713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its digits is 136080, while the sum is 42.

The square root of 39685713 is about 6299.6597527168. The cubic root of 39685713 is about 341.0971277861.

The spelling of 39685713 in words is "thirty-nine million, six hundred eighty-five thousand, seven hundred thirteen".