136589409 has 40 divisors (see below), whose sum is σ = 228080160. Its totient is φ = 80740800.

The previous prime is 136589393. The next prime is 136589413. The reversal of 136589409 is 904985631.

It is a happy number.

It is not a de Polignac number, because 136589409 - 2⁴ = 136589393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136589429) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34662 + ... + 38400.

It is an arithmetic number, because the mean of its divisors is an integer number (5702004).

Almost surely, 2^136589409 is an apocalyptic number.

It is an amenable number.

136589409 is a deficient number, since it is larger than the sum of its proper divisors (91490751).

136589409 is a wasteful number, since it uses less digits than its factorization.

136589409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803 (or 3794 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 136589409 is about 11687.1471711449. The cubic root of 136589409 is about 514.9981575326.

The spelling of 136589409 in words is "one hundred thirty-six million, five hundred eighty-nine thousand, four hundred nine".