135583729 has 8 divisors (see below), whose sum is σ = 141048000. Its totient is φ = 130172112.

The previous prime is 135583727. The next prime is 135583751. The reversal of 135583729 is 927385531.

135583729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135583729 - 2¹ = 135583727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135583727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7869 + ... + 18250.

It is an arithmetic number, because the mean of its divisors is an integer number (17631000).

Almost surely, 2^135583729 is an apocalyptic number.

It is an amenable number.

135583729 is a deficient number, since it is larger than the sum of its proper divisors (5464271).

135583729 is a wasteful number, since it uses less digits than its factorization.

135583729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26327.

The product of its digits is 226800, while the sum is 43.

The square root of 135583729 is about 11644.0426399082. The cubic root of 135583729 is about 513.7311005493.

The spelling of 135583729 in words is "one hundred thirty-five million, five hundred eighty-three thousand, seven hundred twenty-nine".