240696539 has 2 divisors, whose sum is σ = 240696540. Its totient is φ = 240696538.

The previous prime is 240696529. The next prime is 240696553. The reversal of 240696539 is 935696042.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240696539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240696539.

It is not a weakly prime, because it can be changed into another prime (240696529) 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, 120348269 + 120348270.

It is an arithmetic number, because the mean of its divisors is an integer number (120348270).

Almost surely, 2^240696539 is an apocalyptic number.

240696539 is a deficient number, since it is larger than the sum of its proper divisors (1).

240696539 is an equidigital number, since it uses as much as digits as its factorization.

240696539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 240696539 is about 15514.3977968853. The cubic root of 240696539 is about 622.0471173593.

The spelling of 240696539 in words is "two hundred forty million, six hundred ninety-six thousand, five hundred thirty-nine".