135009 has 12 divisors (see below), whose sum is σ = 222976. Its totient is φ = 77112.

The previous prime is 135007. The next prime is 135017. The reversal of 135009 is 900531.

It is not a de Polignac number, because 135009 - 2¹ = 135007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134982 and 135000.

It is not an unprimeable number, because it can be changed into a prime (135007) 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, 1009 + ... + 1134.

2¹³⁵⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

135009 is a deficient number, since it is larger than the sum of its proper divisors (87967).

135009 is a wasteful number, since it uses less digits than its factorization.

135009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 135009 is about 367.4357086621. The cubic root of 135009 is about 51.3004183589.

The spelling of 135009 in words is "one hundred thirty-five thousand, nine".