844422898568 has 12 divisors (see below), whose sum is σ = 1583297808165. Its totient is φ = 422210149728.

The previous prime is 844422898567. The next prime is 844422898577. The reversal of 844422898568 is 865898224448.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 838502827204 + 5920071364 = 915698^2 + 76942^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=649778.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 844422898498 and 844422898507.

It is not an unprimeable number, because it can be changed into a prime (844422898567) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2436668 + ... + 2761556.

Almost surely, 2^844422898568 is an apocalyptic number.

It is an amenable number.

844422898568 is a deficient number, since it is larger than the sum of its proper divisors (738874909597).

844422898568 is an frugal number, since it uses more digits than its factorization.

844422898568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649784 (or 324891 counting only the distinct ones).

The product of its digits is 283115520, while the sum is 68.

The spelling of 844422898568 in words is "eight hundred forty-four billion, four hundred twenty-two million, eight hundred ninety-eight thousand, five hundred sixty-eight".