144189 has 12 divisors (see below), whose sum is σ = 214396. Its totient is φ = 93312.

The previous prime is 144173. The next prime is 144203. The reversal of 144189 is 981441.

It can be written as a sum of positive squares in 2 ways, for example, as 72900 + 71289 = 270^2 + 267^2 .

It is not a de Polignac number, because 144189 - 2⁴ = 144173 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117 + ... + 549.

2¹⁴⁴¹⁸⁹ is an apocalyptic number.

It is an amenable number.

144189 is a deficient number, since it is larger than the sum of its proper divisors (70207).

144189 is a wasteful number, since it uses less digits than its factorization.

144189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 473 counting only the distinct ones).

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

The square root of 144189 is about 379.7222669268. The cubic root of 144189 is about 52.4377493462.

It can be divided in two parts, 144 and 189, that added together give a palindrome (333).

The spelling of 144189 in words is "one hundred forty-four thousand, one hundred eighty-nine".