86199823 has 4 divisors (see below), whose sum is σ = 87291040. Its totient is φ = 85108608.

The previous prime is 86199811. The next prime is 86199829. The reversal of 86199823 is 32899168.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86199823 - 2¹⁷ = 86068751 is a prime.

It is a super-3 number, since 3×86199823³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86199829) 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 in 3 ways as a sum of consecutive naturals, for example, 545490 + ... + 545647.

It is an arithmetic number, because the mean of its divisors is an integer number (21822760).

Almost surely, 2^86199823 is an apocalyptic number.

86199823 is a deficient number, since it is larger than the sum of its proper divisors (1091217).

86199823 is a wasteful number, since it uses less digits than its factorization.

86199823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091216.

The product of its digits is 186624, while the sum is 46.

The square root of 86199823 is about 9284.3859786202. The cubic root of 86199823 is about 441.7420999120.

The spelling of 86199823 in words is "eighty-six million, one hundred ninety-nine thousand, eight hundred twenty-three".