86223889 has 2 divisors, whose sum is σ = 86223890. Its totient is φ = 86223888.

The previous prime is 86223887. The next prime is 86223911. The reversal of 86223889 is 98832268.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76860289 + 9363600 = 8767^2 + 3060^2 .

It is a cyclic number.

It is not a de Polignac number, because 86223889 - 2¹ = 86223887 is a prime.

Together with 86223887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (86223887) 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, 43111944 + 43111945.

It is an arithmetic number, because the mean of its divisors is an integer number (43111945).

Almost surely, 2^86223889 is an apocalyptic number.

It is an amenable number.

86223889 is a deficient number, since it is larger than the sum of its proper divisors (1).

86223889 is an equidigital number, since it uses as much as digits as its factorization.

86223889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 46.

The square root of 86223889 is about 9285.6819351085. The cubic root of 86223889 is about 441.7832058595.

The spelling of 86223889 in words is "eighty-six million, two hundred twenty-three thousand, eight hundred eighty-nine".