189441 has 24 divisors (see below), whose sum is σ = 326144. Its totient is φ = 103680.

The previous prime is 189439. The next prime is 189463. The reversal of 189441 is 144981.

It is not a de Polignac number, because 189441 - 2¹ = 189439 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1905 + ... + 2001.

It is a Proth number, since it is equal to 185 ⋅ 2¹⁰ + 1 and 185 < 2¹⁰.

2¹⁸⁹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

189441 is a deficient number, since it is larger than the sum of its proper divisors (136703).

189441 is a wasteful number, since it uses less digits than its factorization.

189441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 138 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 189441 is about 435.2482050509. The cubic root of 189441 is about 57.4325358729.

It can be divided in two parts, 189 and 441, that added together give a triangular number (630 = T₃₅).

The spelling of 189441 in words is "one hundred eighty-nine thousand, four hundred forty-one".