8509224321 has 12 divisors (see below), whose sum is σ = 13236571348. Its totient is φ = 5236445664.

The previous prime is 8509224293. The next prime is 8509224331. The reversal of 8509224321 is 1234229058.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5007543696 + 3501680625 = 70764^2 + 59175^2 .

It is not a de Polignac number, because 8509224321 - 2¹¹ = 8509222273 is a prime.

It is a super-2 number, since 2×8509224321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8509224331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36364090 + ... + 36364323.

Almost surely, 2^8509224321 is an apocalyptic number.

It is an amenable number.

8509224321 is a deficient number, since it is larger than the sum of its proper divisors (4727347027).

8509224321 is a wasteful number, since it uses less digits than its factorization.

8509224321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72728432 (or 72728429 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 8509224321 is about 92245.4569125223. The cubic root of 8509224321 is about 2041.5655291049.

The spelling of 8509224321 in words is "eight billion, five hundred nine million, two hundred twenty-four thousand, three hundred twenty-one".