9965394559 has 2 divisors, whose sum is σ = 9965394560. Its totient is φ = 9965394558.

The previous prime is 9965394557. The next prime is 9965394563. The reversal of 9965394559 is 9554935699.

It is a weak prime.

It is an emirp because it is prime and its reverse (9554935699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9965394559 - 2¹ = 9965394557 is a prime.

Together with 9965394557, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9965394559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9965394553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982697279 + 4982697280.

It is an arithmetic number, because the mean of its divisors is an integer number (4982697280).

Almost surely, 2^9965394559 is an apocalyptic number.

9965394559 is a deficient number, since it is larger than the sum of its proper divisors (1).

9965394559 is an equidigital number, since it uses as much as digits as its factorization.

9965394559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59049000, while the sum is 64.

The square root of 9965394559 is about 99826.8228433621. The cubic root of 9965394559 is about 2151.9466457402.

The spelling of 9965394559 in words is "nine billion, nine hundred sixty-five million, three hundred ninety-four thousand, five hundred fifty-nine".