8220984 has 32 divisors (see below), whose sum is σ = 20805120. Its totient is φ = 2706656.

The previous prime is 8220937. The next prime is 8221009. The reversal of 8220984 is 4890228.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 72 + ... + 4055.

It is an arithmetic number, because the mean of its divisors is an integer number (650160).

Almost surely, 2^8220984 is an apocalyptic number.

It is an amenable number.

8220984 is an abundant number, since it is smaller than the sum of its proper divisors (12584136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8220984 is a wasteful number, since it uses less digits than its factorization.

8220984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219 (or 4215 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 8220984 is about 2867.2258369372. The cubic root of 8220984 is about 201.8248326235.

The spelling of 8220984 in words is "eight million, two hundred twenty thousand, nine hundred eighty-four".