89839 has 2 divisors, whose sum is σ = 89840. Its totient is φ = 89838.

The previous prime is 89833. The next prime is 89849. The reversal of 89839 is 93898.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89839 - 2¹³ = 81647 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 89798 and 89807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44919 + 44920.

It is an arithmetic number, because the mean of its divisors is an integer number (44920).

2⁸⁹⁸³⁹ is an apocalyptic number.

89839 is a deficient number, since it is larger than the sum of its proper divisors (1).

89839 is an equidigital number, since it uses as much as digits as its factorization.

89839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 37.

The square root of 89839 is about 299.7315465546. The cubic root of 89839 is about 44.7873090647.

The spelling of 89839 in words is "eighty-nine thousand, eight hundred thirty-nine".