22244456789 has 4 divisors (see below), whose sum is σ = 22257383820. Its totient is φ = 22231529760.

The previous prime is 22244456783. The next prime is 22244456879. The reversal of 22244456789 is 98765444222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12395482225 + 9848974564 = 111335^2 + 99242^2 .

It is a cyclic number.

It is not a de Polignac number, because 22244456789 - 2¹² = 22244452693 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22244456789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22244456783) 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, 6460934 + ... + 6464375.

It is an arithmetic number, because the mean of its divisors is an integer number (5564345955).

Almost surely, 2^22244456789 is an apocalyptic number.

It is an amenable number.

22244456789 is a deficient number, since it is larger than the sum of its proper divisors (12927031).

22244456789 is a wasteful number, since it uses less digits than its factorization.

22244456789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12927030.

The product of its digits is 7741440, while the sum is 53.

The spelling of 22244456789 in words is "twenty-two billion, two hundred forty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".