9988009236 has 60 divisors (see below), whose sum is σ = 26160997632. Its totient is φ = 3322914192.

The previous prime is 9988009223. The next prime is 9988009259. The reversal of 9988009236 is 6329008899.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139981 + ... + 198923.

Almost surely, 2^9988009236 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 9988009236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13080498816).

9988009236 is an abundant number, since it is smaller than the sum of its proper divisors (16172988396).

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

9988009236 is a wasteful number, since it uses less digits than its factorization.

9988009236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59482 (or 59471 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 9988009236 is about 99940.0281969142. The cubic root of 9988009236 is about 2153.5732350259.

The spelling of 9988009236 in words is "nine billion, nine hundred eighty-eight million, nine thousand, two hundred thirty-six".