86109823 has 2 divisors, whose sum is σ = 86109824. Its totient is φ = 86109822.

The previous prime is 86109791. The next prime is 86109827. The reversal of 86109823 is 32890168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86109823 - 2⁵ = 86109791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86109827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43054911 + 43054912.

It is an arithmetic number, because the mean of its divisors is an integer number (43054912).

Almost surely, 2^86109823 is an apocalyptic number.

86109823 is a deficient number, since it is larger than the sum of its proper divisors (1).

86109823 is an equidigital number, since it uses as much as digits as its factorization.

86109823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 86109823 is about 9279.5378656483. The cubic root of 86109823 is about 441.5883075099.

The spelling of 86109823 in words is "eighty-six million, one hundred nine thousand, eight hundred twenty-three".