8448440448449 has 4 divisors (see below), whose sum is σ = 8454647974020. Its totient is φ = 8442232922880.

The previous prime is 8448440448431. The next prime is 8448440448479. The reversal of 8448440448449 is 9448440448448.

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 493445836849 + 7954994611600 = 702457^2 + 2820460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8448440448449 is a prime.

It is a super-2 number, since 2×8448440448449² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8448440448419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3103760744 + ... + 3103763465.

It is an arithmetic number, because the mean of its divisors is an integer number (2113661993505).

Almost surely, 2^{8448440448449} is an apocalyptic number.

It is an amenable number.

8448440448449 is a deficient number, since it is larger than the sum of its proper divisors (6207525571).

8448440448449 is a wasteful number, since it uses less digits than its factorization.

8448440448449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6207525570.

The product of its (nonzero) digits is 301989888, while the sum is 65.

Subtracting 8448440448449 from its reverse (9448440448448), we obtain a palindrome (999999999999).

The spelling of 8448440448449 in words is "eight trillion, four hundred forty-eight billion, four hundred forty million, four hundred forty-eight thousand, four hundred forty-nine".