9389997900 has 90 divisors (see below), whose sum is σ = 30438689820. Its totient is φ = 2503997280.

The previous prime is 9389997791. The next prime is 9389997937. The reversal of 9389997900 is 97999839.

It is a tau number, because it is divible by the number of its divisors (90).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 571530 + ... + 587729.

Almost surely, 2^9389997900 is an apocalyptic number.

9389997900 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9389997900 is an abundant number, since it is smaller than the sum of its proper divisors (21048691920).

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

9389997900 is a wasteful number, since it uses less digits than its factorization.

9389997900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159285 (or 1159269 counting only the distinct ones).

The product of its (nonzero) digits is 9920232, while the sum is 63.

The square root of 9389997900 is about 96902.0015273162. The cubic root of 9389997900 is about 2109.7054836266.

The spelling of 9389997900 in words is "nine billion, three hundred eighty-nine million, nine hundred ninety-seven thousand, nine hundred".