189559 has 2 divisors, whose sum is σ = 189560. Its totient is φ = 189558.

The previous prime is 189547. The next prime is 189583. The reversal of 189559 is 955981.

189559 is nontrivially palindromic in base 13.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189559 is a prime.

It is a super-2 number, since 2×189559² = 71865228962, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189509) 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 as a sum of consecutive naturals, namely, 94779 + 94780.

It is an arithmetic number, because the mean of its divisors is an integer number (94780).

2¹⁸⁹⁵⁵⁹ is an apocalyptic number.

189559 is a deficient number, since it is larger than the sum of its proper divisors (1).

189559 is an equidigital number, since it uses as much as digits as its factorization.

189559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 37.

The square root of 189559 is about 435.3837387868. The cubic root of 189559 is about 57.4444580239. Note that the first 4 decimals are identical.

The spelling of 189559 in words is "one hundred eighty-nine thousand, five hundred fifty-nine".