9927930321 has 15 divisors (see below), whose sum is σ = 14831951673. Its totient is φ = 6618022380.

The previous prime is 9927930277. The next prime is 9927930323. The reversal of 9927930321 is 1230397299.

It is a happy number.

The square root of 9927930321 is 99639.

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

It is not a de Polignac number, because 9927930321 - 2⁷ = 9927930193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9927930323) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 891216 + ... + 902286.

Almost surely, 2^9927930321 is an apocalyptic number.

9927930321 is the 99639-th square number.

9927930321 is the 49820-th centered octagonal number.

It is an amenable number.

9927930321 is a deficient number, since it is larger than the sum of its proper divisors (4904021352).

9927930321 is an frugal number, since it uses more digits than its factorization.

9927930321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22154 (or 11074 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The cubic root of 9927930321 is about 2149.2465592166.

It can be divided in two parts, 99279 and 30321, that added together give a square (129600 = 360²).

The spelling of 9927930321 in words is "nine billion, nine hundred twenty-seven million, nine hundred thirty thousand, three hundred twenty-one".