135915879 has 16 divisors (see below), whose sum is σ = 197896320. Its totient is φ = 82289760.

The previous prime is 135915877. The next prime is 135915883. The reversal of 135915879 is 978519531.

135915879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135915879 - 2¹ = 135915877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135915877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51412 + ... + 53990.

It is an arithmetic number, because the mean of its divisors is an integer number (12368520).

Almost surely, 2^135915879 is an apocalyptic number.

135915879 is a deficient number, since it is larger than the sum of its proper divisors (61980441).

135915879 is a wasteful number, since it uses less digits than its factorization.

135915879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190.

The product of its digits is 340200, while the sum is 48.

The square root of 135915879 is about 11658.2965736852. The cubic root of 135915879 is about 514.1502674501.

The spelling of 135915879 in words is "one hundred thirty-five million, nine hundred fifteen thousand, eight hundred seventy-nine".