135336839 has 4 divisors (see below), whose sum is σ = 147640200. Its totient is φ = 123033480.

The previous prime is 135336827. The next prime is 135336893. The reversal of 135336839 is 938633531.

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-135336839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135336796 and 135336805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135336809) 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, 6151664 + ... + 6151685.

It is an arithmetic number, because the mean of its divisors is an integer number (36910050).

Almost surely, 2^135336839 is an apocalyptic number.

135336839 is a deficient number, since it is larger than the sum of its proper divisors (12303361).

135336839 is a wasteful number, since it uses less digits than its factorization.

135336839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12303360.

The product of its digits is 174960, while the sum is 41.

The square root of 135336839 is about 11633.4362507386. The cubic root of 135336839 is about 513.4190863749.

The spelling of 135336839 in words is "one hundred thirty-five million, three hundred thirty-six thousand, eight hundred thirty-nine".