28859938329 has 4 divisors (see below), whose sum is σ = 38479917776. Its totient is φ = 19239958884.

The previous prime is 28859938307. The next prime is 28859938339. The reversal of 28859938329 is 92383995882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28859938329 - 2⁸ = 28859938073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28859938329.

It is not an unprimeable number, because it can be changed into a prime (28859938339) 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 3 ways as a sum of consecutive naturals, for example, 4809989719 + ... + 4809989724.

It is an arithmetic number, because the mean of its divisors is an integer number (9619979444).

Almost surely, 2^28859938329 is an apocalyptic number.

It is an amenable number.

28859938329 is a deficient number, since it is larger than the sum of its proper divisors (9619979447).

28859938329 is an equidigital number, since it uses as much as digits as its factorization.

28859938329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9619979446.

The product of its digits is 67184640, while the sum is 66.

The spelling of 28859938329 in words is "twenty-eight billion, eight hundred fifty-nine million, nine hundred thirty-eight thousand, three hundred twenty-nine".