8644444469 has 16 divisors (see below), whose sum is σ = 8991513216. Its totient is φ = 8304172800.

The previous prime is 8644444463. The next prime is 8644444483. The reversal of 8644444469 is 9644444468.

It is a happy number.

It is not a de Polignac number, because 8644444469 - 2¹⁶ = 8644378933 is a prime.

It is a super-2 number, since 2×8644444469² (a number of 21 digits) contains 22 as substring.

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 8644444469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8644444463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3192014 + ... + 3194720.

It is an arithmetic number, because the mean of its divisors is an integer number (561969576).

Almost surely, 2^8644444469 is an apocalyptic number.

It is an amenable number.

8644444469 is a deficient number, since it is larger than the sum of its proper divisors (347068747).

8644444469 is a wasteful number, since it uses less digits than its factorization.

8644444469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916.

The product of its digits is 10616832, while the sum is 53.

The square root of 8644444469 is about 92975.5046719296. The cubic root of 8644444469 is about 2052.3229245448.

Subtracting 8644444469 from its reverse (9644444468), we obtain a palindrome (999999999).

The spelling of 8644444469 in words is "eight billion, six hundred forty-four million, four hundred forty-four thousand, four hundred sixty-nine".