243072589 has 2 divisors, whose sum is σ = 243072590. Its totient is φ = 243072588.

The previous prime is 243072569. The next prime is 243072601. The reversal of 243072589 is 985270342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181575625 + 61496964 = 13475^2 + 7842^2 .

It is a cyclic number.

It is not a de Polignac number, because 243072589 - 2²⁷ = 108854861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243072509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121536294 + 121536295.

It is an arithmetic number, because the mean of its divisors is an integer number (121536295).

Almost surely, 2^243072589 is an apocalyptic number.

It is an amenable number.

243072589 is a deficient number, since it is larger than the sum of its proper divisors (1).

243072589 is an equidigital number, since it uses as much as digits as its factorization.

243072589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 243072589 is about 15590.7853875294. The cubic root of 243072589 is about 624.0872770277.

It can be divided in two parts, 24307 and 2589, that added together give a square (26896 = 164²).

The spelling of 243072589 in words is "two hundred forty-three million, seventy-two thousand, five hundred eighty-nine".