8871444379009 has 27 divisors (see below), whose sum is σ = 9527906682147. Its totient is φ = 8258967105408.

The previous prime is 8871444379003. The next prime is 8871444379043. The reversal of 8871444379009 is 9009734441788.

It is a happy number.

The square root of 8871444379009 is 2978497.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5781836657025 + 3089607721984 = 2404545^2 + 1757728^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8871444379009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8871444379003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3338893809 + ... + 3338896465.

Almost surely, 2^{8871444379009} is an apocalyptic number.

8871444379009 is the 2978497-th square number.

8871444379009 is the 1489249-th centered octagonal number.

It is an amenable number.

8871444379009 is a deficient number, since it is larger than the sum of its proper divisors (656462303138).

8871444379009 is an frugal number, since it uses more digits than its factorization.

8871444379009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 64.

Multiplying 8871444379009 by its sum of digits (64), we get a square (567772440256576 = 23827976²).

The spelling of 8871444379009 in words is "eight trillion, eight hundred seventy-one billion, four hundred forty-four million, three hundred seventy-nine thousand, nine".