22439955348889 has 27 divisors (see below), whose sum is σ = 24830086738653. Its totient is φ = 20270470813632.

The previous prime is 22439955348887. The next prime is 22439955348919. The reversal of 22439955348889 is 98884355993422.

The square root of 22439955348889 is 4737083.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2310196324489 + 20129759024400 = 1519933^2 + 4486620^2 .

It is not a de Polignac number, because 22439955348889 - 2¹ = 22439955348887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22439955348887) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2894353837 + ... + 2894361589.

Almost surely, 2^{22439955348889} is an apocalyptic number.

22439955348889 is the 4737083-rd square number.

22439955348889 is the 2368542-nd centered octagonal number.

It is an amenable number.

22439955348889 is a deficient number, since it is larger than the sum of its proper divisors (2390131389764).

22439955348889 is an frugal number, since it uses more digits than its factorization.

22439955348889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15626 (or 7813 counting only the distinct ones).

The product of its digits is 5374771200, while the sum is 79.

The spelling of 22439955348889 in words is "twenty-two trillion, four hundred thirty-nine billion, nine hundred fifty-five million, three hundred forty-eight thousand, eight hundred eighty-nine".