184489 has 2 divisors, whose sum is σ = 184490. Its totient is φ = 184488.

The previous prime is 184487. The next prime is 184511. The reversal of 184489 is 984481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99225 + 85264 = 315^2 + 292^2 .

It is an emirp because it is prime and its reverse (984481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 184489 - 2¹ = 184487 is a prime.

It is a super-2 number, since 2×184489² = 68072382242, which contains 22 as substring.

Together with 184487, it forms a pair of twin primes.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (184487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92244 + 92245.

It is an arithmetic number, because the mean of its divisors is an integer number (92245).

2¹⁸⁴⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

184489 is a deficient number, since it is larger than the sum of its proper divisors (1).

184489 is an equidigital number, since it uses as much as digits as its factorization.

184489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 184489 is about 429.5218271520. The cubic root of 184489 is about 56.9276809316.

The spelling of 184489 in words is "one hundred eighty-four thousand, four hundred eighty-nine".