240838709 has 2 divisors, whose sum is σ = 240838710. Its totient is φ = 240838708.

The previous prime is 240838691. The next prime is 240838723. The reversal of 240838709 is 907838042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222159025 + 18679684 = 14905^2 + 4322^2 .

It is a cyclic number.

It is not a de Polignac number, because 240838709 - 2⁸ = 240838453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240838769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120419354 + 120419355.

It is an arithmetic number, because the mean of its divisors is an integer number (120419355).

Almost surely, 2^240838709 is an apocalyptic number.

It is an amenable number.

240838709 is a deficient number, since it is larger than the sum of its proper divisors (1).

240838709 is an equidigital number, since it uses as much as digits as its factorization.

240838709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 240838709 is about 15518.9789934776. The cubic root of 240838709 is about 622.1695661943.

The spelling of 240838709 in words is "two hundred forty million, eight hundred thirty-eight thousand, seven hundred nine".