8466208321 has 4 divisors (see below), whose sum is σ = 8475322500. Its totient is φ = 8457094144.

The previous prime is 8466208319. The next prime is 8466208343. The reversal of 8466208321 is 1238026648.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3160688400 + 5305519921 = 56220^2 + 72839^2 .

It is a cyclic number.

It is not a de Polignac number, because 8466208321 - 2¹ = 8466208319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8466208921) 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, 4555696 + ... + 4557553.

It is an arithmetic number, because the mean of its divisors is an integer number (2118830625).

Almost surely, 2^8466208321 is an apocalyptic number.

It is an amenable number.

8466208321 is a deficient number, since it is larger than the sum of its proper divisors (9114179).

8466208321 is an equidigital number, since it uses as much as digits as its factorization.

8466208321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9114178.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 8466208321 is about 92012.0009618311. Note that the first 3 decimals coincide. The cubic root of 8466208321 is about 2038.1195282475.

The spelling of 8466208321 in words is "eight billion, four hundred sixty-six million, two hundred eight thousand, three hundred twenty-one".