9809906600 has 96 divisors (see below), whose sum is σ = 25355043840. Its totient is φ = 3505248000.

The previous prime is 9809906597. The next prime is 9809906621. The reversal of 9809906600 is 66099089.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19745 + ... + 141455.

It is an arithmetic number, because the mean of its divisors is an integer number (264115040).

Almost surely, 2^9809906600 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 9809906600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12677521920).

9809906600 is an abundant number, since it is smaller than the sum of its proper divisors (15545137240).

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

9809906600 is a wasteful number, since it uses less digits than its factorization.

9809906600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121771 (or 121762 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 9809906600 is about 99044.9726134547. The cubic root of 9809906600 is about 2140.6958025066.

The spelling of 9809906600 in words is "nine billion, eight hundred nine million, nine hundred six thousand, six hundred".