860087279 has 2 divisors, whose sum is σ = 860087280. Its totient is φ = 860087278.

The previous prime is 860087257. The next prime is 860087287. The reversal of 860087279 is 972780068.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 860087279 - 2⁸ = 860087023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860087779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430043639 + 430043640.

It is an arithmetic number, because the mean of its divisors is an integer number (430043640).

Almost surely, 2^860087279 is an apocalyptic number.

860087279 is a deficient number, since it is larger than the sum of its proper divisors (1).

860087279 is an equidigital number, since it uses as much as digits as its factorization.

860087279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 860087279 is about 29327.2446540755. The cubic root of 860087279 is about 951.0007105987. Note that the first 3 decimals are identical.

The spelling of 860087279 in words is "eight hundred sixty million, eighty-seven thousand, two hundred seventy-nine".