86173823 has 2 divisors, whose sum is σ = 86173824. Its totient is φ = 86173822.

The previous prime is 86173811. The next prime is 86173853. The reversal of 86173823 is 32837168.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86173823 - 2¹⁰ = 86172799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86173853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43086911 + 43086912.

It is an arithmetic number, because the mean of its divisors is an integer number (43086912).

Almost surely, 2^86173823 is an apocalyptic number.

86173823 is a deficient number, since it is larger than the sum of its proper divisors (1).

86173823 is an equidigital number, since it uses as much as digits as its factorization.

86173823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 86173823 is about 9282.9856727241. The cubic root of 86173823 is about 441.6976819958.

The spelling of 86173823 in words is "eighty-six million, one hundred seventy-three thousand, eight hundred twenty-three".