9998173 has 2 divisors, whose sum is σ = 9998174. Its totient is φ = 9998172.

The previous prime is 9998147. The next prime is 9998179. The reversal of 9998173 is 3718999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9622404 + 375769 = 3102^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 9998173 - 2⁵ = 9998141 is a prime.

9998173 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9998179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999086 + 4999087.

It is an arithmetic number, because the mean of its divisors is an integer number (4999087).

Almost surely, 2^9998173 is an apocalyptic number.

It is an amenable number.

9998173 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998173 is an equidigital number, since it uses as much as digits as its factorization.

9998173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 46.

The square root of 9998173 is about 3161.9887729086. The cubic root of 9998173 is about 215.4303476968.

The spelling of 9998173 in words is "nine million, nine hundred ninety-eight thousand, one hundred seventy-three".