8998609321 has 9 divisors (see below), whose sum is σ = 9745391781. Its totient is φ = 8305270272.

The previous prime is 8998609307. The next prime is 8998609327. The reversal of 8998609321 is 1239068998.

The square root of 8998609321 is 94861.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2486119321 + 6512490000 = 49861^2 + 80700^2 .

It is not a de Polignac number, because 8998609321 - 2¹¹ = 8998607273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8998609327) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1229545 + ... + 1236841.

It is an arithmetic number, because the mean of its divisors is an integer number (1082821309).

Almost surely, 2^8998609321 is an apocalyptic number.

8998609321 is the 94861-st square number.

8998609321 is the 47431-st centered octagonal number.

It is an amenable number.

8998609321 is a deficient number, since it is larger than the sum of its proper divisors (746782460).

8998609321 is an frugal number, since it uses more digits than its factorization.

8998609321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14620 (or 7310 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 55.

The cubic root of 8998609321 is about 2079.9766794260.

The spelling of 8998609321 in words is "eight billion, nine hundred ninety-eight million, six hundred nine thousand, three hundred twenty-one".