8539222000 has 80 divisors (see below), whose sum is σ = 20668444992. Its totient is φ = 3412281600.

The previous prime is 8539221997. The next prime is 8539222033. The reversal of 8539222000 is 2229358.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3224677 + ... + 3227323.

Almost surely, 2^8539222000 is an apocalyptic number.

8539222000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8539222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10334222496).

8539222000 is an abundant number, since it is smaller than the sum of its proper divisors (12129222992).

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

8539222000 is a wasteful number, since it uses less digits than its factorization.

8539222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283 (or 4267 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 8539222000 is about 92407.9109167608. The cubic root of 8539222000 is about 2043.9617679668.

The spelling of 8539222000 in words is "eight billion, five hundred thirty-nine million, two hundred twenty-two thousand".