173004389 has 2 divisors, whose sum is σ = 173004390. Its totient is φ = 173004388.

The previous prime is 173004373. The next prime is 173004407. The reversal of 173004389 is 983400371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124701889 + 48302500 = 11167^2 + 6950^2 .

It is an emirp because it is prime and its reverse (983400371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173004389 - 2⁴ = 173004373 is a prime.

It is a super-3 number, since 3×173004389³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173004089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86502194 + 86502195.

It is an arithmetic number, because the mean of its divisors is an integer number (86502195).

Almost surely, 2^173004389 is an apocalyptic number.

It is an amenable number.

173004389 is a deficient number, since it is larger than the sum of its proper divisors (1).

173004389 is an equidigital number, since it uses as much as digits as its factorization.

173004389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 173004389 is about 13153.1132816531. The cubic root of 173004389 is about 557.2101776046.

The spelling of 173004389 in words is "one hundred seventy-three million, four thousand, three hundred eighty-nine".