135580239 has 24 divisors (see below), whose sum is σ = 206369280. Its totient is φ = 85604112.

The previous prime is 135580231. The next prime is 135580259. The reversal of 135580239 is 932085531.

It is not a de Polignac number, because 135580239 - 2³ = 135580231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135580231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18142 + ... + 24500.

It is an arithmetic number, because the mean of its divisors is an integer number (8598720).

Almost surely, 2^135580239 is an apocalyptic number.

135580239 is a deficient number, since it is larger than the sum of its proper divisors (70789041).

135580239 is a wasteful number, since it uses less digits than its factorization.

135580239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6491 (or 6488 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 135580239 is about 11643.8927769024. The cubic root of 135580239 is about 513.7266926042.

The spelling of 135580239 in words is "one hundred thirty-five million, five hundred eighty thousand, two hundred thirty-nine".