135583309 has 4 divisors (see below), whose sum is σ = 136925820. Its totient is φ = 134240800.

The previous prime is 135583307. The next prime is 135583337. The reversal of 135583309 is 903385531.

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 89302500 + 46280809 = 9450^2 + 6803^2 .

It is a cyclic number.

It is not a de Polignac number, because 135583309 - 2¹ = 135583307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135583303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671104 + ... + 671305.

It is an arithmetic number, because the mean of its divisors is an integer number (34231455).

Almost surely, 2^135583309 is an apocalyptic number.

It is an amenable number.

135583309 is a deficient number, since it is larger than the sum of its proper divisors (1342511).

135583309 is a wasteful number, since it uses less digits than its factorization.

135583309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342510.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 135583309 is about 11644.0246049208. The cubic root of 135583309 is about 513.7305700843.

The spelling of 135583309 in words is "one hundred thirty-five million, five hundred eighty-three thousand, three hundred nine".