860291 has 2 divisors, whose sum is σ = 860292. Its totient is φ = 860290.

The previous prime is 860267. The next prime is 860297. The reversal of 860291 is 192068.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 860291 - 2¹⁰ = 859267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 860291.

It is not a weakly prime, because it can be changed into another prime (860297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430145 + 430146.

It is an arithmetic number, because the mean of its divisors is an integer number (430146).

2⁸⁶⁰²⁹¹ is an apocalyptic number.

860291 is a deficient number, since it is larger than the sum of its proper divisors (1).

860291 is an equidigital number, since it uses as much as digits as its factorization.

860291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 860291 is about 927.5187329645. The cubic root of 860291 is about 95.1075789615.

The spelling of 860291 in words is "eight hundred sixty thousand, two hundred ninety-one".