998084173 has 2 divisors, whose sum is σ = 998084174. Its totient is φ = 998084172.

The previous prime is 998084147. The next prime is 998084189. The reversal of 998084173 is 371480899.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553802089 + 444282084 = 23533^2 + 21078^2 .

It is an emirp because it is prime and its reverse (371480899) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998084173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998084273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499042086 + 499042087.

It is an arithmetic number, because the mean of its divisors is an integer number (499042087).

Almost surely, 2^998084173 is an apocalyptic number.

It is an amenable number.

998084173 is a deficient number, since it is larger than the sum of its proper divisors (1).

998084173 is an equidigital number, since it uses as much as digits as its factorization.

998084173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 998084173 is about 31592.4701946524. The cubic root of 998084173 is about 999.3609827439.

The spelling of 998084173 in words is "nine hundred ninety-eight million, eighty-four thousand, one hundred seventy-three".