9930660399 has 32 divisors (see below), whose sum is σ = 16483342080. Its totient is φ = 5855911200.

The previous prime is 9930660349. The next prime is 9930660431.

9930660399 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9930660399 - 2⁹ = 9930659887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9930660349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440857 + ... + 462834.

It is an arithmetic number, because the mean of its divisors is an integer number (515104440).

Almost surely, 2^9930660399 is an apocalyptic number.

9930660399 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9930660399 is a deficient number, since it is larger than the sum of its proper divisors (6552681681).

9930660399 is a wasteful number, since it uses less digits than its factorization.

9930660399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903748 (or 903742 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 54.

The square root of 9930660399 is about 99652.6989047462. The cubic root of 9930660399 is about 2149.4435480081.

The spelling of 9930660399 in words is "nine billion, nine hundred thirty million, six hundred sixty thousand, three hundred ninety-nine".