8684288849 has 2 divisors, whose sum is σ = 8684288850. Its totient is φ = 8684288848.

The previous prime is 8684288813. The next prime is 8684288869. The reversal of 8684288849 is 9488824868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6939723025 + 1744565824 = 83305^2 + 41768^2 .

It is a cyclic number.

It is not a de Polignac number, because 8684288849 - 2¹⁶ = 8684223313 is a prime.

It is not a weakly prime, because it can be changed into another prime (8684288869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4342144424 + 4342144425.

It is an arithmetic number, because the mean of its divisors is an integer number (4342144425).

Almost surely, 2^8684288849 is an apocalyptic number.

It is an amenable number.

8684288849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8684288849 is an equidigital number, since it uses as much as digits as its factorization.

8684288849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56623104, while the sum is 65.

The square root of 8684288849 is about 93189.5318638311. The cubic root of 8684288849 is about 2055.4713133694.

The spelling of 8684288849 in words is "eight billion, six hundred eighty-four million, two hundred eighty-eight thousand, eight hundred forty-nine".