13085709 has 16 divisors (see below), whose sum is σ = 21474432. Its totient is φ = 6902208.

The previous prime is 13085707. The next prime is 13085713. The reversal of 13085709 is 90758031.

13085709 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 13085709 - 2¹ = 13085707 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13085709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13085701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23694 + ... + 24239.

It is an arithmetic number, because the mean of its divisors is an integer number (1342152).

Almost surely, 2^13085709 is an apocalyptic number.

It is an amenable number.

13085709 is a deficient number, since it is larger than the sum of its proper divisors (8388723).

13085709 is a wasteful number, since it uses less digits than its factorization.

13085709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47956.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 13085709 is about 3617.4174489544. The cubic root of 13085709 is about 235.6490822668.

The spelling of 13085709 in words is "thirteen million, eighty-five thousand, seven hundred nine".