82287199 has 4 divisors (see below), whose sum is σ = 82305360. Its totient is φ = 82269040.

The previous prime is 82287143. The next prime is 82287209. The reversal of 82287199 is 99178228.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 82287199 - 2⁷ = 82287071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82287899) 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 in 3 ways as a sum of consecutive naturals, for example, 3942 + ... + 13420.

It is an arithmetic number, because the mean of its divisors is an integer number (20576340).

Almost surely, 2^82287199 is an apocalyptic number.

82287199 is a deficient number, since it is larger than the sum of its proper divisors (18161).

82287199 is an equidigital number, since it uses as much as digits as its factorization.

82287199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18160.

The product of its digits is 145152, while the sum is 46.

The square root of 82287199 is about 9071.2291890350. The cubic root of 82287199 is about 434.9547651910.

The spelling of 82287199 in words is "eighty-two million, two hundred eighty-seven thousand, one hundred ninety-nine".