8221396 has 12 divisors (see below), whose sum is σ = 15013152. Its totient is φ = 3931928.

The previous prime is 8221391. The next prime is 8221403. The reversal of 8221396 is 6931228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44590 + ... + 44773.

It is an arithmetic number, because the mean of its divisors is an integer number (1251096).

Almost surely, 2^8221396 is an apocalyptic number.

It is an amenable number.

8221396 is a deficient number, since it is larger than the sum of its proper divisors (6791756).

8221396 is a wasteful number, since it uses less digits than its factorization.

8221396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89390 (or 89388 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 8221396 is about 2867.2976824878. The cubic root of 8221396 is about 201.8282040951.

The spelling of 8221396 in words is "eight million, two hundred twenty-one thousand, three hundred ninety-six".