240788689 has 2 divisors, whose sum is σ = 240788690. Its totient is φ = 240788688.

The previous prime is 240788671. The next prime is 240788693. The reversal of 240788689 is 986887042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162996289 + 77792400 = 12767^2 + 8820^2 .

It is a cyclic number.

It is not a de Polignac number, because 240788689 - 2⁵ = 240788657 is a prime.

It is not a weakly prime, because it can be changed into another prime (240788609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120394344 + 120394345.

It is an arithmetic number, because the mean of its divisors is an integer number (120394345).

Almost surely, 2^240788689 is an apocalyptic number.

It is an amenable number.

240788689 is a deficient number, since it is larger than the sum of its proper divisors (1).

240788689 is an equidigital number, since it uses as much as digits as its factorization.

240788689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 240788689 is about 15517.3673346995. The cubic root of 240788689 is about 622.1264902334.

The spelling of 240788689 in words is "two hundred forty million, seven hundred eighty-eight thousand, six hundred eighty-nine".