189339 has 4 divisors (see below), whose sum is σ = 252456. Its totient is φ = 126224.

The previous prime is 189337. The next prime is 189347. The reversal of 189339 is 933981.

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 189339 - 2¹ = 189337 is a prime.

It is a D-number.

189339 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (189337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31554 + ... + 31559.

It is an arithmetic number, because the mean of its divisors is an integer number (63114).

2¹⁸⁹³³⁹ is an apocalyptic number.

189339 is a deficient number, since it is larger than the sum of its proper divisors (63117).

189339 is an equidigital number, since it uses as much as digits as its factorization.

189339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63116.

The product of its digits is 5832, while the sum is 33.

The square root of 189339 is about 435.1310147530. The cubic root of 189339 is about 57.4222262948.

It can be divided in two parts, 189 and 339, that added together give a triangular number (528 = T₃₂).

The spelling of 189339 in words is "one hundred eighty-nine thousand, three hundred thirty-nine".