28869719329 has 4 divisors (see below), whose sum is σ = 31494239280. Its totient is φ = 26245199380.

The previous prime is 28869719323. The next prime is 28869719363. The reversal of 28869719329 is 92391796882.

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 a cyclic number.

It is not a de Polignac number, because 28869719329 - 2¹⁷ = 28869588257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28869719323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312259959 + ... + 1312259980.

It is an arithmetic number, because the mean of its divisors is an integer number (7873559820).

Almost surely, 2^28869719329 is an apocalyptic number.

It is an amenable number.

28869719329 is a deficient number, since it is larger than the sum of its proper divisors (2624519951).

28869719329 is a wasteful number, since it uses less digits than its factorization.

28869719329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624519950.

The product of its digits is 23514624, while the sum is 64.

The spelling of 28869719329 in words is "twenty-eight billion, eight hundred sixty-nine million, seven hundred nineteen thousand, three hundred twenty-nine".