8922128809 has 16 divisors (see below), whose sum is σ = 10015130304. Its totient is φ = 7879144000.

The previous prime is 8922128779. The next prime is 8922128821. The reversal of 8922128809 is 9088212298.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8922128809 - 2¹⁷ = 8921997737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8922128849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16879 + ... + 134644.

It is an arithmetic number, because the mean of its divisors is an integer number (625945644).

Almost surely, 2^8922128809 is an apocalyptic number.

It is an amenable number.

8922128809 is a deficient number, since it is larger than the sum of its proper divisors (1093001495).

8922128809 is a wasteful number, since it uses less digits than its factorization.

8922128809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151688.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 8922128809 is about 94457.0209619169. The cubic root of 8922128809 is about 2074.0672293942.

It can be divided in two parts, 8922 and 128809, that added together give a palindrome (137731).

The spelling of 8922128809 in words is "eight billion, nine hundred twenty-two million, one hundred twenty-eight thousand, eight hundred nine".