86284819 has 2 divisors, whose sum is σ = 86284820. Its totient is φ = 86284818.

The previous prime is 86284801. The next prime is 86284829. The reversal of 86284819 is 91848268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86284819 - 2⁹ = 86284307 is a prime.

It is a super-2 number, since 2×86284819² = 14890139979725522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86284829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43142409 + 43142410.

It is an arithmetic number, because the mean of its divisors is an integer number (43142410).

Almost surely, 2^86284819 is an apocalyptic number.

86284819 is a deficient number, since it is larger than the sum of its proper divisors (1).

86284819 is an equidigital number, since it uses as much as digits as its factorization.

86284819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 46.

The square root of 86284819 is about 9288.9622132938. The cubic root of 86284819 is about 441.8872432017.

The spelling of 86284819 in words is "eighty-six million, two hundred eighty-four thousand, eight hundred nineteen".