86128099 has 2 divisors, whose sum is σ = 86128100. Its totient is φ = 86128098.

The previous prime is 86128093. The next prime is 86128139. The reversal of 86128099 is 99082168.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86128099 - 2⁵ = 86128067 is a prime.

It is not a weakly prime, because it can be changed into another prime (86128093) 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, 43064049 + 43064050.

It is an arithmetic number, because the mean of its divisors is an integer number (43064050).

Almost surely, 2^86128099 is an apocalyptic number.

86128099 is a deficient number, since it is larger than the sum of its proper divisors (1).

86128099 is an equidigital number, since it uses as much as digits as its factorization.

86128099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 86128099 is about 9280.5225607182. The cubic root of 86128099 is about 441.6195462882.

The spelling of 86128099 in words is "eighty-six million, one hundred twenty-eight thousand, ninety-nine".