8849663689 has 2 divisors, whose sum is σ = 8849663690. Its totient is φ = 8849663688.

The previous prime is 8849663677. The next prime is 8849663723. The reversal of 8849663689 is 9863669488.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7813145664 + 1036518025 = 88392^2 + 32195^2 .

It is a cyclic number.

It is not a de Polignac number, because 8849663689 - 2¹¹ = 8849661641 is a prime.

It is not a weakly prime, because it can be changed into another prime (8849663189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4424831844 + 4424831845.

It is an arithmetic number, because the mean of its divisors is an integer number (4424831845).

Almost surely, 2^8849663689 is an apocalyptic number.

It is an amenable number.

8849663689 is a deficient number, since it is larger than the sum of its proper divisors (1).

8849663689 is an equidigital number, since it uses as much as digits as its factorization.

8849663689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107495424, while the sum is 67.

The square root of 8849663689 is about 94072.6511213541. The cubic root of 8849663689 is about 2068.4367988422.

The spelling of 8849663689 in words is "eight billion, eight hundred forty-nine million, six hundred sixty-three thousand, six hundred eighty-nine".