135989868 has 48 divisors (see below), whose sum is σ = 383975424. Its totient is φ = 36568320.

The previous prime is 135989827. The next prime is 135989873. The reversal of 135989868 is 868989531.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46188 + ... + 49043.

It is an arithmetic number, because the mean of its divisors is an integer number (7999488).

Almost surely, 2^135989868 is an apocalyptic number.

It is an amenable number.

135989868 is an abundant number, since it is smaller than the sum of its proper divisors (247985556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135989868 is a wasteful number, since it uses less digits than its factorization.

135989868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95262 (or 95260 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 57.

The square root of 135989868 is about 11661.4693756833. The cubic root of 135989868 is about 514.2435471159.

The spelling of 135989868 in words is "one hundred thirty-five million, nine hundred eighty-nine thousand, eight hundred sixty-eight".