135879 has 4 divisors (see below), whose sum is σ = 181176. Its totient is φ = 90584.

The previous prime is 135859. The next prime is 135887. The reversal of 135879 is 978531.

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 135879 - 2⁸ = 135623 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135829) 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, 22644 + ... + 22649.

It is an arithmetic number, because the mean of its divisors is an integer number (45294).

2¹³⁵⁸⁷⁹ is an apocalyptic number.

135879 is a deficient number, since it is larger than the sum of its proper divisors (45297).

135879 is an equidigital number, since it uses as much as digits as its factorization.

135879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45296.

The product of its digits is 7560, while the sum is 33.

The square root of 135879 is about 368.6176881269. The cubic root of 135879 is about 51.4103760588.

The spelling of 135879 in words is "one hundred thirty-five thousand, eight hundred seventy-nine".