173439 has 12 divisors (see below), whose sum is σ = 286416. Its totient is φ = 99072.

The previous prime is 173431. The next prime is 173473. The reversal of 173439 is 934371.

It is not a de Polignac number, because 173439 - 2³ = 173431 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1314 + ... + 1439.

It is an arithmetic number, because the mean of its divisors is an integer number (23868).

2¹⁷³⁴³⁹ is an apocalyptic number.

173439 is a deficient number, since it is larger than the sum of its proper divisors (112977).

173439 is a wasteful number, since it uses less digits than its factorization.

173439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 2763 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 173439 is about 416.4600821207. The cubic root of 173439 is about 55.7676383825.

Subtracting from 173439 its product of digits (2268), we obtain a palindrome (171171).

The spelling of 173439 in words is "one hundred seventy-three thousand, four hundred thirty-nine".