89899 has 2 divisors, whose sum is σ = 89900. Its totient is φ = 89898.

The previous prime is 89897. The next prime is 89909. The reversal of 89899 is 99898.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89899 - 2¹ = 89897 is a prime.

Together with 89897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (89891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44949 + 44950.

It is an arithmetic number, because the mean of its divisors is an integer number (44950).

2⁸⁹⁸⁹⁹ is an apocalyptic number.

89899 is a deficient number, since it is larger than the sum of its proper divisors (1).

89899 is an equidigital number, since it uses as much as digits as its factorization.

89899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 43.

The square root of 89899 is about 299.8316194133. The cubic root of 89899 is about 44.7972774175.

Subtracting 89899 from its reverse (99898), we obtain a palindrome (9999).

It can be divided in two parts, 8989 and 9, that added together give a palindrome (8998).

The spelling of 89899 in words is "eighty-nine thousand, eight hundred ninety-nine".