13535009 has 4 divisors (see below), whose sum is σ = 14331204. Its totient is φ = 12738816.

The previous prime is 13534993. The next prime is 13535021. The reversal of 13535009 is 90053531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8427409 + 5107600 = 2903^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 13535009 - 2⁴ = 13534993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13535029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398072 + ... + 398105.

It is an arithmetic number, because the mean of its divisors is an integer number (3582801).

Almost surely, 2^13535009 is an apocalyptic number.

It is an amenable number.

13535009 is a deficient number, since it is larger than the sum of its proper divisors (796195).

13535009 is an equidigital number, since it uses as much as digits as its factorization.

13535009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796194.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 13535009 is about 3678.9956509895. The cubic root of 13535009 is about 238.3158072539.

The spelling of 13535009 in words is "thirteen million, five hundred thirty-five thousand, nine".