9998605273 has 2 divisors, whose sum is σ = 9998605274. Its totient is φ = 9998605272.

The previous prime is 9998605271. The next prime is 9998605283. The reversal of 9998605273 is 3725068999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9998400064 + 205209 = 99992^2 + 453^2 .

It is an emirp because it is prime and its reverse (3725068999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9998605273 - 2¹ = 9998605271 is a prime.

Together with 9998605271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9998605271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999302636 + 4999302637.

It is an arithmetic number, because the mean of its divisors is an integer number (4999302637).

Almost surely, 2^9998605273 is an apocalyptic number.

It is an amenable number.

9998605273 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998605273 is an equidigital number, since it uses as much as digits as its factorization.

9998605273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The square root of 9998605273 is about 99993.0261218251. The cubic root of 9998605273 is about 2154.3345237672.

The spelling of 9998605273 in words is "nine billion, nine hundred ninety-eight million, six hundred five thousand, two hundred seventy-three".