9399398400 has 936 divisors, whose sum is σ = 40562356224. Its totient is φ = 2034892800.

The previous prime is 9399398399. The next prime is 9399398479. The reversal of 9399398400 is 48939939.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 199987177 + ... + 199987223.

Almost surely, 2^9399398400 is an apocalyptic number.

9399398400 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9399398400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20281178112).

9399398400 is an abundant number, since it is smaller than the sum of its proper divisors (31162957824).

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

9399398400 is a wasteful number, since it uses less digits than its factorization.

9399398400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The square root of 9399398400 is about 96950.4945835760. The cubic root of 9399398400 is about 2110.4092705047.

The spelling of 9399398400 in words is "nine billion, three hundred ninety-nine million, three hundred ninety-eight thousand, four hundred".