173289943 has 4 divisors (see below), whose sum is σ = 174247528. Its totient is φ = 172332360.

The previous prime is 173289923. The next prime is 173289971. The reversal of 173289943 is 349982371.

173289943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349982371 = 37 ⋅9458983.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173289943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 173289893 and 173289902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173289923) 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, 478521 + ... + 478882.

It is an arithmetic number, because the mean of its divisors is an integer number (43561882).

Almost surely, 2^173289943 is an apocalyptic number.

173289943 is a deficient number, since it is larger than the sum of its proper divisors (957585).

173289943 is an equidigital number, since it uses as much as digits as its factorization.

173289943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957584.

The product of its digits is 326592, while the sum is 46.

The square root of 173289943 is about 13163.9638027457. The cubic root of 173289943 is about 557.5165785655.

The spelling of 173289943 in words is "one hundred seventy-three million, two hundred eighty-nine thousand, nine hundred forty-three".