169439 has 4 divisors (see below), whose sum is σ = 179424. Its totient is φ = 159456.

The previous prime is 169427. The next prime is 169457. The reversal of 169439 is 934961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 169439 - 2¹² = 165343 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 (169409) 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, 4967 + ... + 5000.

It is an arithmetic number, because the mean of its divisors is an integer number (44856).

2¹⁶⁹⁴³⁹ is an apocalyptic number.

169439 is a deficient number, since it is larger than the sum of its proper divisors (9985).

169439 is an equidigital number, since it uses as much as digits as its factorization.

169439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9984.

The product of its digits is 5832, while the sum is 32.

The square root of 169439 is about 411.6296879478. The cubic root of 169439 is about 55.3355791737.

It can be divided in two parts, 1694 and 39, that multiplied together give a palindrome (66066).

The spelling of 169439 in words is "one hundred sixty-nine thousand, four hundred thirty-nine".