39715 has 12 divisors (see below), whose sum is σ = 52704. Its totient is φ = 28704.

The previous prime is 39709. The next prime is 39719. The reversal of 39715 is 51793.

39715 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 39715 - 2¹⁵ = 6947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39715.

It is not an unprimeable number, because it can be changed into a prime (39719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822 + ... + 868.

It is an arithmetic number, because the mean of its divisors is an integer number (4392).

2³⁹⁷¹⁵ is an apocalyptic number.

39715 is a deficient number, since it is larger than the sum of its proper divisors (12989).

39715 is a wasteful number, since it uses less digits than its factorization.

39715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 65 counting only the distinct ones).

The product of its digits is 945, while the sum is 25.

The square root of 39715 is about 199.2862263178. The cubic root of 39715 is about 34.1181014022.

The spelling of 39715 in words is "thirty-nine thousand, seven hundred fifteen".