135328909 has 4 divisors (see below), whose sum is σ = 135868320. Its totient is φ = 134789500.

The previous prime is 135328901. The next prime is 135328939. The reversal of 135328909 is 909823531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135328909 - 2³ = 135328901 is a prime.

It is a super-2 number, since 2×135328909² = 36627827222260562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135328901) 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, 269329 + ... + 269830.

It is an arithmetic number, because the mean of its divisors is an integer number (33967080).

Almost surely, 2^135328909 is an apocalyptic number.

It is an amenable number.

135328909 is a deficient number, since it is larger than the sum of its proper divisors (539411).

135328909 is an equidigital number, since it uses as much as digits as its factorization.

135328909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539410.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 135328909 is about 11633.0954178155. The cubic root of 135328909 is about 513.4090583271.

The spelling of 135328909 in words is "one hundred thirty-five million, three hundred twenty-eight thousand, nine hundred nine".