8549437844 has 12 divisors (see below), whose sum is σ = 15243809364. Its totient is φ = 4194063744.

The previous prime is 8549437843. The next prime is 8549437861. The reversal of 8549437844 is 4487349458.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3774627844 + 4774810000 = 61438^2 + 69100^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8549437844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8549437843) 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 3 ways as a sum of consecutive naturals, for example, 20163557 + ... + 20163980.

It is an arithmetic number, because the mean of its divisors is an integer number (1270317447).

Almost surely, 2^8549437844 is an apocalyptic number.

It is an amenable number.

8549437844 is a deficient number, since it is larger than the sum of its proper divisors (6694371520).

8549437844 is a wasteful number, since it uses less digits than its factorization.

8549437844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40327594 (or 40327592 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 56.

The square root of 8549437844 is about 92463.1702030598. The cubic root of 8549437844 is about 2044.7765366981.

The spelling of 8549437844 in words is "eight billion, five hundred forty-nine million, four hundred thirty-seven thousand, eight hundred forty-four".