189089 has 4 divisors (see below), whose sum is σ = 190356. Its totient is φ = 187824.

The previous prime is 189067. The next prime is 189127. The reversal of 189089 is 980981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980981 = 37 ⋅26513.

It can be written as a sum of positive squares in 2 ways, for example, as 180625 + 8464 = 425^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 189089 - 2⁸ = 188833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189019) 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, 374 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (47589).

2¹⁸⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

189089 is a deficient number, since it is larger than the sum of its proper divisors (1267).

189089 is a wasteful number, since it uses less digits than its factorization.

189089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 189089 is about 434.8436500629. The cubic root of 189089 is about 57.3969420524.

The spelling of 189089 in words is "one hundred eighty-nine thousand, eighty-nine".