84089 has 2 divisors, whose sum is σ = 84090. Its totient is φ = 84088.

The previous prime is 84067. The next prime is 84121. The reversal of 84089 is 98048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75625 + 8464 = 275^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 84089 - 2⁸ = 83833 is a prime.

It is not a weakly prime, because it can be changed into another prime (84059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42044 + 42045.

It is an arithmetic number, because the mean of its divisors is an integer number (42045).

2⁸⁴⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

84089 is a deficient number, since it is larger than the sum of its proper divisors (1).

84089 is an equidigital number, since it uses as much as digits as its factorization.

84089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 84089 is about 289.9810338626. The cubic root of 84089 is about 43.8106532888.

It can be divided in two parts, 840 and 89, that added together give a palindrome (929).

The spelling of 84089 in words is "eighty-four thousand, eighty-nine".