135535839 has 16 divisors (see below), whose sum is σ = 185520864. Its totient is φ = 87984000.

The previous prime is 135535837. The next prime is 135535843. The reversal of 135535839 is 938535531.

It is not a de Polignac number, because 135535839 - 2¹ = 135535837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135535839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135535837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14817 + ... + 22149.

It is an arithmetic number, because the mean of its divisors is an integer number (11595054).

Almost surely, 2^135535839 is an apocalyptic number.

135535839 is a deficient number, since it is larger than the sum of its proper divisors (49985025).

135535839 is a wasteful number, since it uses less digits than its factorization.

135535839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498.

The product of its digits is 243000, while the sum is 42.

The square root of 135535839 is about 11641.9860419088. The cubic root of 135535839 is about 513.6706078442.

The spelling of 135535839 in words is "one hundred thirty-five million, five hundred thirty-five thousand, eight hundred thirty-nine".