860349557 has 2 divisors, whose sum is σ = 860349558. Its totient is φ = 860349556.

The previous prime is 860349527. The next prime is 860349577. The reversal of 860349557 is 755943068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 852289636 + 8059921 = 29194^2 + 2839^2 .

It is a cyclic number.

It is not a de Polignac number, because 860349557 - 2²⁸ = 591914101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860349517) 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, 430174778 + 430174779.

It is an arithmetic number, because the mean of its divisors is an integer number (430174779).

Almost surely, 2^860349557 is an apocalyptic number.

It is an amenable number.

860349557 is a deficient number, since it is larger than the sum of its proper divisors (1).

860349557 is an equidigital number, since it uses as much as digits as its factorization.

860349557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 860349557 is about 29331.7158891191. The cubic root of 860349557 is about 951.0973679268.

The spelling of 860349557 in words is "eight hundred sixty million, three hundred forty-nine thousand, five hundred fifty-seven".