8859220 has 12 divisors (see below), whose sum is σ = 18604404. Its totient is φ = 3543680.

The previous prime is 8859203. The next prime is 8859223. The reversal of 8859220 is 229588.

It can be written as a sum of positive squares in 2 ways, for example, as 1008016 + 7851204 = 1004^2 + 2802^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8859223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221461 + ... + 221500.

It is an arithmetic number, because the mean of its divisors is an integer number (1550367).

Almost surely, 2^8859220 is an apocalyptic number.

It is an amenable number.

8859220 is an abundant number, since it is smaller than the sum of its proper divisors (9745184).

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

8859220 is a wasteful number, since it uses less digits than its factorization.

8859220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442970 (or 442968 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8859220 is about 2976.4441872812. Note that the first 3 decimals coincide. The cubic root of 8859220 is about 206.9181064963.

The spelling of 8859220 in words is "eight million, eight hundred fifty-nine thousand, two hundred twenty".