135746839 has 4 divisors (see below), whose sum is σ = 135770440. Its totient is φ = 135723240.

The previous prime is 135746827. The next prime is 135746869. The reversal of 135746839 is 938647531.

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

It is a cyclic number.

It is not a de Polignac number, because 135746839 - 2¹⁵ = 135714071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135746869) 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 3 ways as a sum of consecutive naturals, for example, 3097 + ... + 16765.

It is an arithmetic number, because the mean of its divisors is an integer number (33942610).

Almost surely, 2^135746839 is an apocalyptic number.

135746839 is a deficient number, since it is larger than the sum of its proper divisors (23601).

135746839 is an equidigital number, since it uses as much as digits as its factorization.

135746839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23600.

The product of its digits is 544320, while the sum is 46.

The square root of 135746839 is about 11651.0445454474. The cubic root of 135746839 is about 513.9370276681.

The spelling of 135746839 in words is "one hundred thirty-five million, seven hundred forty-six thousand, eight hundred thirty-nine".