22172928389 has 4 divisors (see below), whose sum is σ = 23339924640. Its totient is φ = 21005932140.

The previous prime is 22172928383. The next prime is 22172928397. The reversal of 22172928389 is 98382927122.

It is a happy number.

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 22172928389 - 2²⁸ = 21904492933 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 22172928389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22172928383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583498097 + ... + 583498134.

It is an arithmetic number, because the mean of its divisors is an integer number (5834981160).

Almost surely, 2^22172928389 is an apocalyptic number.

It is an amenable number.

22172928389 is a deficient number, since it is larger than the sum of its proper divisors (1166996251).

22172928389 is a wasteful number, since it uses less digits than its factorization.

22172928389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166996250.

The product of its digits is 1741824, while the sum is 53.

The spelling of 22172928389 in words is "twenty-two billion, one hundred seventy-two million, nine hundred twenty-eight thousand, three hundred eighty-nine".