8221338091 has 8 divisors (see below), whose sum is σ = 8758353744. Its totient is φ = 7690256640.

The previous prime is 8221338071. The next prime is 8221338107. The reversal of 8221338091 is 1908331228.

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 8221338091 - 2⁷ = 8221337963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8221338091.

It is not an unprimeable number, because it can be changed into a prime (8221338071) 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, 1480690 + ... + 1486231.

It is an arithmetic number, because the mean of its divisors is an integer number (1094794218).

Almost surely, 2^8221338091 is an apocalyptic number.

8221338091 is a deficient number, since it is larger than the sum of its proper divisors (537015653).

8221338091 is a wasteful number, since it uses less digits than its factorization.

8221338091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967101.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 8221338091 is about 90671.5947306542. The cubic root of 8221338091 is about 2018.2773022192.

The spelling of 8221338091 in words is "eight billion, two hundred twenty-one million, three hundred thirty-eight thousand, ninety-one".