9923398240 has 48 divisors (see below), whose sum is σ = 26793178272. Its totient is φ = 3402307584.

The previous prime is 9923398211. The next prime is 9923398249. The reversal of 9923398240 is 428933299.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9923398249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4428969 + ... + 4431208.

It is an arithmetic number, because the mean of its divisors is an integer number (558191214).

Almost surely, 2^9923398240 is an apocalyptic number.

It is an amenable number.

9923398240 is an abundant number, since it is smaller than the sum of its proper divisors (16869780032).

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

9923398240 is a wasteful number, since it uses less digits than its factorization.

9923398240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8860199 (or 8860191 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 9923398240 is about 99616.2548984853. The cubic root of 9923398240 is about 2148.9194671394.

The spelling of 9923398240 in words is "nine billion, nine hundred twenty-three million, three hundred ninety-eight thousand, two hundred forty".