86285891 has 2 divisors, whose sum is σ = 86285892. Its totient is φ = 86285890.

The previous prime is 86285879. The next prime is 86285909. The reversal of 86285891 is 19858268.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86285891 - 2¹⁴ = 86269507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86285491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43142945 + 43142946.

It is an arithmetic number, because the mean of its divisors is an integer number (43142946).

Almost surely, 2^86285891 is an apocalyptic number.

86285891 is a deficient number, since it is larger than the sum of its proper divisors (1).

86285891 is an equidigital number, since it uses as much as digits as its factorization.

86285891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 47.

The square root of 86285891 is about 9289.0199160084. The cubic root of 86285891 is about 441.8890731920.

The spelling of 86285891 in words is "eighty-six million, two hundred eighty-five thousand, eight hundred ninety-one".