9999998273 has 2 divisors, whose sum is σ = 9999998274. Its totient is φ = 9999998272.

The previous prime is 9999998269. The next prime is 9999998311. The reversal of 9999998273 is 3728999999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9915578929 + 84419344 = 99577^2 + 9188^2 .

It is an emirp because it is prime and its reverse (3728999999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9999998273 - 2² = 9999998269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9999998273.

It is not a weakly prime, because it can be changed into another prime (9999998233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999999136 + 4999999137.

It is an arithmetic number, because the mean of its divisors is an integer number (4999999137).

Almost surely, 2^9999998273 is an apocalyptic number.

It is an amenable number.

9999998273 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999998273 is an equidigital number, since it uses as much as digits as its factorization.

9999998273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 178564176, while the sum is 74.

The square root of 9999998273 is about 99999.9913649996. The cubic root of 9999998273 is about 2154.4345660083.

The spelling of 9999998273 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, two hundred seventy-three".