13534809 has 16 divisors (see below), whose sum is σ = 18585600. Its totient is φ = 8756496.

The previous prime is 13534757. The next prime is 13534811. The reversal of 13534809 is 90843531.

13534809 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 13534809 - 2⁷ = 13534681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13534809.

It is not an unprimeable number, because it can be changed into a prime (13534889) 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, 30612 + ... + 31050.

It is an arithmetic number, because the mean of its divisors is an integer number (1161600).

Almost surely, 2^13534809 is an apocalyptic number.

It is an amenable number.

13534809 is a deficient number, since it is larger than the sum of its proper divisors (5050791).

13534809 is a wasteful number, since it uses less digits than its factorization.

13534809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 13534809 is about 3678.9684695577. The cubic root of 13534809 is about 238.3146334240.

The spelling of 13534809 in words is "thirteen million, five hundred thirty-four thousand, eight hundred nine".