8921228859 has 24 divisors (see below), whose sum is σ = 13602959760. Its totient is φ = 5618460672.

The previous prime is 8921228851. The next prime is 8921228861. The reversal of 8921228859 is 9588221298.

It is a happy number.

It is not a de Polignac number, because 8921228859 - 2³ = 8921228851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8921228851) 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 23 ways as a sum of consecutive naturals, for example, 13534 + ... + 134259.

It is an arithmetic number, because the mean of its divisors is an integer number (566789990).

Almost surely, 2^8921228859 is an apocalyptic number.

8921228859 is a deficient number, since it is larger than the sum of its proper divisors (4681730901).

8921228859 is a wasteful number, since it uses less digits than its factorization.

8921228859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148171 (or 148168 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 8921228859 is about 94452.2570349698. The cubic root of 8921228859 is about 2073.9974919431.

The spelling of 8921228859 in words is "eight billion, nine hundred twenty-one million, two hundred twenty-eight thousand, eight hundred fifty-nine".