135988879 has 8 divisors (see below), whose sum is σ = 146916000. Its totient is φ = 125128416.

The previous prime is 135988861. The next prime is 135988889. The reversal of 135988879 is 978889531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135988879 - 2⁷ = 135988751 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 (135988889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12379 + ... + 20620.

It is an arithmetic number, because the mean of its divisors is an integer number (18364500).

Almost surely, 2^135988879 is an apocalyptic number.

135988879 is a deficient number, since it is larger than the sum of its proper divisors (10927121).

135988879 is a wasteful number, since it uses less digits than its factorization.

135988879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33329.

The product of its digits is 4354560, while the sum is 58.

The square root of 135988879 is about 11661.4269710014. The cubic root of 135988879 is about 514.2423004836.

The spelling of 135988879 in words is "one hundred thirty-five million, nine hundred eighty-eight thousand, eight hundred seventy-nine".