9900438000 has 160 divisors (see below), whose sum is σ = 32324597760. Its totient is φ = 2606572800.

The previous prime is 9900437983. The next prime is 9900438017. The reversal of 9900438000 is 8340099.

It is an interprime number because it is at equal distance from previous prime (9900437983) and next prime (9900438017).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463557 + ... + 484443.

It is an arithmetic number, because the mean of its divisors is an integer number (202028736).

Almost surely, 2^9900438000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9900438000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16162298880).

9900438000 is an abundant number, since it is smaller than the sum of its proper divisors (22424159760).

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

9900438000 is a wasteful number, since it uses less digits than its factorization.

9900438000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20992 (or 20976 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 9900438000 is about 99500.9447191332. The cubic root of 9900438000 is about 2147.2608347599.

Adding to 9900438000 its reverse (8340099), we get a palindrome (9908778099).

The spelling of 9900438000 in words is "nine billion, nine hundred million, four hundred thirty-eight thousand".