243300089 has 2 divisors, whose sum is σ = 243300090. Its totient is φ = 243300088.

The previous prime is 243300061. The next prime is 243300097. The reversal of 243300089 is 980003342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171610000 + 71690089 = 13100^2 + 8467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243300089 is a prime.

It is not a weakly prime, because it can be changed into another prime (243390089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121650044 + 121650045.

It is an arithmetic number, because the mean of its divisors is an integer number (121650045).

Almost surely, 2^243300089 is an apocalyptic number.

It is an amenable number.

243300089 is a deficient number, since it is larger than the sum of its proper divisors (1).

243300089 is an equidigital number, since it uses as much as digits as its factorization.

243300089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 243300089 is about 15598.0796574450. The cubic root of 243300089 is about 624.2819179023.

The spelling of 243300089 in words is "two hundred forty-three million, three hundred thousand, eighty-nine".