8644224447 has 32 divisors (see below), whose sum is σ = 13569292800. Its totient is φ = 5419937664.

The previous prime is 8644224431. The next prime is 8644224487. The reversal of 8644224447 is 7444224468.

It is not a de Polignac number, because 8644224447 - 2⁴ = 8644224431 is a prime.

It is a super-2 number, since 2×8644224447² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8644224487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 718798 + ... + 730724.

It is an arithmetic number, because the mean of its divisors is an integer number (424040400).

Almost surely, 2^8644224447 is an apocalyptic number.

8644224447 is a deficient number, since it is larger than the sum of its proper divisors (4925068353).

8644224447 is a wasteful number, since it uses less digits than its factorization.

8644224447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13532 (or 13526 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 45.

The square root of 8644224447 is about 92974.3214387715. The cubic root of 8644224447 is about 2052.3055122045.

It can be divided in two parts, 86442 and 24447, that added together give a square (110889 = 333²).

The spelling of 8644224447 in words is "eight billion, six hundred forty-four million, two hundred twenty-four thousand, four hundred forty-seven".