9930388 has 54 divisors (see below), whose sum is σ = 20647914. Its totient is φ = 4153248.

The previous prime is 9930341. The next prime is 9930391. The reversal of 9930388 is 8830399.

It can be written as a sum of positive squares in only one way, i.e., 6874884 + 3055504 = 2622^2 + 1748^2 .

It is a super-2 number, since 2×9930388² = 197225211661088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9930388.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 431745 + ... + 431767.

Almost surely, 2^9930388 is an apocalyptic number.

It is an amenable number.

9930388 is an abundant number, since it is smaller than the sum of its proper divisors (10717526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9930388 is a wasteful number, since it uses less digits than its factorization.

9930388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 9930388 is about 3151.2518147555. The cubic root of 9930388 is about 214.9423894678.

The spelling of 9930388 in words is "nine million, nine hundred thirty thousand, three hundred eighty-eight".