99173 has 2 divisors, whose sum is σ = 99174. Its totient is φ = 99172.

The previous prime is 99149. The next prime is 99181. The reversal of 99173 is 37199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66049 + 33124 = 257^2 + 182^2 .

99173 is a truncatable prime.

It is an emirp because it is prime and its reverse (37199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99173 - 2⁶ = 99109 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99173.

It is not a weakly prime, because it can be changed into another prime (99103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49586 + 49587.

It is an arithmetic number, because the mean of its divisors is an integer number (49587).

2⁹⁹¹⁷³ is an apocalyptic number.

It is an amenable number.

99173 is a deficient number, since it is larger than the sum of its proper divisors (1).

99173 is an equidigital number, since it uses as much as digits as its factorization.

99173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701, while the sum is 29.

The square root of 99173 is about 314.9174495007. The cubic root of 99173 is about 46.2875808503.

It can be divided in two parts, 99 and 173, that added together give a palindrome (272).

The spelling of 99173 in words is "ninety-nine thousand, one hundred seventy-three".