84489 has 4 divisors (see below), whose sum is σ = 112656. Its totient is φ = 56324.

The previous prime is 84481. The next prime is 84499. The reversal of 84489 is 98448.

84489 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84489 - 2³ = 84481 is a prime.

It is a super-2 number, since 2×84489² = 14276782242, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (84481) 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, 14079 + ... + 14084.

It is an arithmetic number, because the mean of its divisors is an integer number (28164).

2⁸⁴⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

84489 is a deficient number, since it is larger than the sum of its proper divisors (28167).

84489 is a wasteful number, since it uses less digits than its factorization.

84489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28166.

The product of its digits is 9216, while the sum is 33.

The square root of 84489 is about 290.6699158840. The cubic root of 84489 is about 43.8800105478.

The spelling of 84489 in words is "eighty-four thousand, four hundred eighty-nine".