8258199221 has 8 divisors (see below), whose sum is σ = 8343163224. Its totient is φ = 8173670400.

The previous prime is 8258199163. The next prime is 8258199223. The reversal of 8258199221 is 1229918528.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 334707025 + 7923492196 = 18295^2 + 89014^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8258199221 - 2¹⁰ = 8258198197 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 (8258199223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70580 + ... + 146621.

It is an arithmetic number, because the mean of its divisors is an integer number (1042895403).

Almost surely, 2^8258199221 is an apocalyptic number.

It is an amenable number.

8258199221 is a deficient number, since it is larger than the sum of its proper divisors (84964003).

8258199221 is a wasteful number, since it uses less digits than its factorization.

8258199221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217591.

The product of its digits is 207360, while the sum is 47.

The square root of 8258199221 is about 90874.6346402559. The cubic root of 8258199221 is about 2021.2891830197.

The spelling of 8258199221 in words is "eight billion, two hundred fifty-eight million, one hundred ninety-nine thousand, two hundred twenty-one".