86966189 has 2 divisors, whose sum is σ = 86966190. Its totient is φ = 86966188.

The previous prime is 86966179. The next prime is 86966221. The reversal of 86966189 is 98166968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86174089 + 792100 = 9283^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 86966189 - 2¹² = 86962093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86966189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86966119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43483094 + 43483095.

It is an arithmetic number, because the mean of its divisors is an integer number (43483095).

Almost surely, 2^86966189 is an apocalyptic number.

It is an amenable number.

86966189 is a deficient number, since it is larger than the sum of its proper divisors (1).

86966189 is an equidigital number, since it uses as much as digits as its factorization.

86966189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 53.

The square root of 86966189 is about 9325.5664171138. The cubic root of 86966189 is about 443.0473531412.

The spelling of 86966189 in words is "eighty-six million, nine hundred sixty-six thousand, one hundred eighty-nine".