86028889 has 2 divisors, whose sum is σ = 86028890. Its totient is φ = 86028888.

The previous prime is 86028863. The next prime is 86028931. The reversal of 86028889 is 98882068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58905625 + 27123264 = 7675^2 + 5208^2 .

It is a cyclic number.

It is not a de Polignac number, because 86028889 - 2¹¹ = 86026841 is a prime.

It is a super-4 number, since 4×86028889⁴ (a number of 33 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (86028829) 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, 43014444 + 43014445.

It is an arithmetic number, because the mean of its divisors is an integer number (43014445).

Almost surely, 2^86028889 is an apocalyptic number.

It is an amenable number.

86028889 is a deficient number, since it is larger than the sum of its proper divisors (1).

86028889 is an equidigital number, since it uses as much as digits as its factorization.

86028889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 49.

The square root of 86028889 is about 9275.1759552043. The cubic root of 86028889 is about 441.4499155906.

The spelling of 86028889 in words is "eighty-six million, twenty-eight thousand, eight hundred eighty-nine".