9789173 has 2 divisors, whose sum is σ = 9789174. Its totient is φ = 9789172.

The previous prime is 9789137. The next prime is 9789193. The reversal of 9789173 is 3719879.

Together with previous prime (9789137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7879249 + 1909924 = 2807^2 + 1382^2 .

It is an emirp because it is prime and its reverse (3719879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9789173 - 2⁸ = 9788917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9789133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4894586 + 4894587.

It is an arithmetic number, because the mean of its divisors is an integer number (4894587).

Almost surely, 2^9789173 is an apocalyptic number.

It is an amenable number.

9789173 is a deficient number, since it is larger than the sum of its proper divisors (1).

9789173 is an equidigital number, since it uses as much as digits as its factorization.

9789173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 44.

The square root of 9789173 is about 3128.7654114682. The cubic root of 9789173 is about 213.9186592196.

The spelling of 9789173 in words is "nine million, seven hundred eighty-nine thousand, one hundred seventy-three".