86409823 has 2 divisors, whose sum is σ = 86409824. Its totient is φ = 86409822.

The previous prime is 86409797. The next prime is 86409847. The reversal of 86409823 is 32890468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86409823 - 2¹³ = 86401631 is a prime.

It is a super-3 number, since 3×86409823³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86409863) 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, 43204911 + 43204912.

It is an arithmetic number, because the mean of its divisors is an integer number (43204912).

Almost surely, 2^86409823 is an apocalyptic number.

86409823 is a deficient number, since it is larger than the sum of its proper divisors (1).

86409823 is an equidigital number, since it uses as much as digits as its factorization.

86409823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 86409823 is about 9295.6884091497. The cubic root of 86409823 is about 442.1005330174.

The spelling of 86409823 in words is "eighty-six million, four hundred nine thousand, eight hundred twenty-three".