240565189 has 2 divisors, whose sum is σ = 240565190. Its totient is φ = 240565188.

The previous prime is 240565159. The next prime is 240565201. The reversal of 240565189 is 981565042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217120225 + 23444964 = 14735^2 + 4842^2 .

It is a cyclic number.

It is not a de Polignac number, because 240565189 - 2⁹ = 240564677 is a prime.

It is a super-2 number, since 2×240565189² = 115743220317211442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240565159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120282594 + 120282595.

It is an arithmetic number, because the mean of its divisors is an integer number (120282595).

Almost surely, 2^240565189 is an apocalyptic number.

It is an amenable number.

240565189 is a deficient number, since it is larger than the sum of its proper divisors (1).

240565189 is an equidigital number, since it uses as much as digits as its factorization.

240565189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 240565189 is about 15510.1640545805. The cubic root of 240565189 is about 621.9339447641.

The spelling of 240565189 in words is "two hundred forty million, five hundred sixty-five thousand, one hundred eighty-nine".