135585839 has 4 divisors (see below), whose sum is σ = 135617856. Its totient is φ = 135553824.

The previous prime is 135585803. The next prime is 135585869. The reversal of 135585839 is 938585531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135585839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135585793 and 135585802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135585869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8474 + ... + 18519.

It is an arithmetic number, because the mean of its divisors is an integer number (33904464).

Almost surely, 2^135585839 is an apocalyptic number.

135585839 is a deficient number, since it is larger than the sum of its proper divisors (32017).

135585839 is an equidigital number, since it uses as much as digits as its factorization.

135585839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32016.

The product of its digits is 648000, while the sum is 47.

The square root of 135585839 is about 11644.1332438271. The cubic root of 135585839 is about 513.7337654881.

The spelling of 135585839 in words is "one hundred thirty-five million, five hundred eighty-five thousand, eight hundred thirty-nine".