9957324390 has 128 divisors (see below), whose sum is σ = 26251706880. Its totient is φ = 2402168832.

The previous prime is 9957324389. The next prime is 9957324397. The reversal of 9957324390 is 934237599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9957324397) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14795094 + ... + 14795766.

It is an arithmetic number, because the mean of its divisors is an integer number (205091460).

Almost surely, 2^9957324390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9957324390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13125853440).

9957324390 is an abundant number, since it is smaller than the sum of its proper divisors (16294382490).

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

9957324390 is a wasteful number, since it uses less digits than its factorization.

9957324390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398.

The product of its (nonzero) digits is 1837080, while the sum is 51.

The square root of 9957324390 is about 99786.3938119822. The cubic root of 9957324390 is about 2151.3655928762.

The spelling of 9957324390 in words is "nine billion, nine hundred fifty-seven million, three hundred twenty-four thousand, three hundred ninety".