28959834879 has 16 divisors (see below), whose sum is σ = 43176735840. Its totient is φ = 19183582080.

The previous prime is 28959834863. The next prime is 28959834889. The reversal of 28959834879 is 97843895982.

28959834879 is a `hidden beast` number, since 28 + 9 + 598 + 3 + 4 + 8 + 7 + 9 = 666.

It is not a de Polignac number, because 28959834879 - 2⁴ = 28959834863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28959834889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3411642 + ... + 3420119.

It is an arithmetic number, because the mean of its divisors is an integer number (2698545990).

Almost surely, 2^28959834879 is an apocalyptic number.

28959834879 is a deficient number, since it is larger than the sum of its proper divisors (14216900961).

28959834879 is a wasteful number, since it uses less digits than its factorization.

28959834879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6831927 (or 6831921 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 72.

The spelling of 28959834879 in words is "twenty-eight billion, nine hundred fifty-nine million, eight hundred thirty-four thousand, eight hundred seventy-nine".