173399 has 4 divisors (see below), whose sum is σ = 174264. Its totient is φ = 172536.

The previous prime is 173359. The next prime is 173429. The reversal of 173399 is 993371.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 993371 = 193 ⋅5147.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44 + ... + 590.

It is an arithmetic number, because the mean of its divisors is an integer number (43566).

2¹⁷³³⁹⁹ is an apocalyptic number.

173399 is a deficient number, since it is larger than the sum of its proper divisors (865).

173399 is an equidigital number, since it uses as much as digits as its factorization.

173399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its digits is 5103, while the sum is 32.

The square root of 173399 is about 416.4120555411. The cubic root of 173399 is about 55.7633508481.

The spelling of 173399 in words is "one hundred seventy-three thousand, three hundred ninety-nine".