8544772909 has 2 divisors, whose sum is σ = 8544772910. Its totient is φ = 8544772908.

The previous prime is 8544772903. The next prime is 8544772919. The reversal of 8544772909 is 9092774458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5677170409 + 2867602500 = 75347^2 + 53550^2 .

It is a cyclic number.

It is not a de Polignac number, because 8544772909 - 2⁵ = 8544772877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8544772909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8544772903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4272386454 + 4272386455.

It is an arithmetic number, because the mean of its divisors is an integer number (4272386455).

Almost surely, 2^8544772909 is an apocalyptic number.

It is an amenable number.

8544772909 is a deficient number, since it is larger than the sum of its proper divisors (1).

8544772909 is an equidigital number, since it uses as much as digits as its factorization.

8544772909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The square root of 8544772909 is about 92437.9408522280. The cubic root of 8544772909 is about 2044.4045635053.

The spelling of 8544772909 in words is "eight billion, five hundred forty-four million, seven hundred seventy-two thousand, nine hundred nine".