8119992321 has 45 divisors (see below), whose sum is σ = 13705234179. Its totient is φ = 4632426288.

The previous prime is 8119992311. The next prime is 8119992337. The reversal of 8119992321 is 1232999118.

The square root of 8119992321 is 90111.

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

It can be written as a sum of positive squares in only one way, i.e., 26471025 + 8093521296 = 5145^2 + 89964^2 .

It is not a de Polignac number, because 8119992321 - 2¹⁵ = 8119959553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8119992301) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 13246011 + ... + 13246623.

Almost surely, 2^8119992321 is an apocalyptic number.

8119992321 is the 90111-st square number.

8119992321 is the 45056-th centered octagonal number.

It is an amenable number.

8119992321 is a deficient number, since it is larger than the sum of its proper divisors (5585241858).

8119992321 is an frugal number, since it uses more digits than its factorization.

8119992321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 623 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The cubic root of 8119992321 is about 2009.9497789487.

The spelling of 8119992321 in words is "eight billion, one hundred nineteen million, nine hundred ninety-two thousand, three hundred twenty-one".