99289 has 2 divisors, whose sum is σ = 99290. Its totient is φ = 99288.

The previous prime is 99277. The next prime is 99317. The reversal of 99289 is 98299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99225 + 64 = 315^2 + 8^2 .

It is an emirp because it is prime and its reverse (98299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99289 - 2⁵ = 99257 is a prime.

99289 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (99259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49644 + 49645.

It is an arithmetic number, because the mean of its divisors is an integer number (49645).

2⁹⁹²⁸⁹ is an apocalyptic number.

It is an amenable number.

99289 is a deficient number, since it is larger than the sum of its proper divisors (1).

99289 is an equidigital number, since it uses as much as digits as its factorization.

99289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 99289 is about 315.1015709259. The cubic root of 99289 is about 46.3056209326.

Subtracting from 99289 its reverse (98299), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 992 and 89, that multiplied together give a palindrome (88288).

The spelling of 99289 in words is "ninety-nine thousand, two hundred eighty-nine".