860840994239 has 2 divisors, whose sum is σ = 860840994240. Its totient is φ = 860840994238.

The previous prime is 860840994187. The next prime is 860840994271. The reversal of 860840994239 is 932499048068.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 860840994239 - 2³² = 856546026943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860840904239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430420497119 + 430420497120.

It is an arithmetic number, because the mean of its divisors is an integer number (430420497120).

Almost surely, 2^860840994239 is an apocalyptic number.

860840994239 is a deficient number, since it is larger than the sum of its proper divisors (1).

860840994239 is an equidigital number, since it uses as much as digits as its factorization.

860840994239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 860840994239 in words is "eight hundred sixty billion, eight hundred forty million, nine hundred ninety-four thousand, two hundred thirty-nine".