286859 has 2 divisors, whose sum is σ = 286860. Its totient is φ = 286858.

The previous prime is 286831. The next prime is 286873. The reversal of 286859 is 958682.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-286859 is a prime.

It is a super-3 number, since 3×286859³ = 70815234083213337, which contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286859.

It is not a weakly prime, because it can be changed into another prime (286459) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143429 + 143430.

It is an arithmetic number, because the mean of its divisors is an integer number (143430).

2²⁸⁶⁸⁵⁹ is an apocalyptic number.

286859 is a deficient number, since it is larger than the sum of its proper divisors (1).

286859 is an equidigital number, since it uses as much as digits as its factorization.

286859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 286859 is about 535.5921956115. The cubic root of 286859 is about 65.9512189284.

The spelling of 286859 in words is "two hundred eighty-six thousand, eight hundred fifty-nine".