86434189 has 2 divisors, whose sum is σ = 86434190. Its totient is φ = 86434188.

The previous prime is 86434177. The next prime is 86434199. The reversal of 86434189 is 98143468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86174089 + 260100 = 9283^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 86434189 - 2⁵ = 86434157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86434129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43217094 + 43217095.

It is an arithmetic number, because the mean of its divisors is an integer number (43217095).

Almost surely, 2^86434189 is an apocalyptic number.

It is an amenable number.

86434189 is a deficient number, since it is larger than the sum of its proper divisors (1).

86434189 is an equidigital number, since it uses as much as digits as its factorization.

86434189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 43.

The square root of 86434189 is about 9296.9989243841. The cubic root of 86434189 is about 442.1420838846.

It can be divided in two parts, 864 and 34189, that added together give a palindrome (35053).

The spelling of 86434189 in words is "eighty-six million, four hundred thirty-four thousand, one hundred eighty-nine".