8344865489 has 2 divisors, whose sum is σ = 8344865490. Its totient is φ = 8344865488.

The previous prime is 8344865483. The next prime is 8344865513. The reversal of 8344865489 is 9845684438.

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., 5036315089 + 3308550400 = 70967^2 + 57520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8344865489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8344865483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4172432744 + 4172432745.

It is an arithmetic number, because the mean of its divisors is an integer number (4172432745).

Almost surely, 2^8344865489 is an apocalyptic number.

It is an amenable number.

8344865489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8344865489 is an equidigital number, since it uses as much as digits as its factorization.

8344865489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26542080, while the sum is 59.

The square root of 8344865489 is about 91350.2352980002. The cubic root of 8344865489 is about 2028.3354461249.

The spelling of 8344865489 in words is "eight billion, three hundred forty-four million, eight hundred sixty-five thousand, four hundred eighty-nine".