8221946 has 16 divisors (see below), whose sum is σ = 13198560. Its totient is φ = 3829680.

The previous prime is 8221937. The next prime is 8221949. The reversal of 8221946 is 6491228.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8221949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545 + ... + 4091.

It is an arithmetic number, because the mean of its divisors is an integer number (824910).

Almost surely, 2^8221946 is an apocalyptic number.

8221946 is a deficient number, since it is larger than the sum of its proper divisors (4976614).

8221946 is a wasteful number, since it uses less digits than its factorization.

8221946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629.

The product of its digits is 6912, while the sum is 32.

The square root of 8221946 is about 2867.3935900047. The cubic root of 8221946 is about 201.8327046705.

The spelling of 8221946 in words is "eight million, two hundred twenty-one thousand, nine hundred forty-six".