9988562412 has 108 divisors (see below), whose sum is σ = 26505234840. Its totient is φ = 3253007952.

The previous prime is 9988562411. The next prime is 9988562443. The reversal of 9988562412 is 2142658899.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

9988562412 is a `hidden beast` number, since 9 + 9 + 8 + 8 + 5 + 624 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

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

It is not an unprimeable number, because it can be changed into a prime (9988562411) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 61279443 + ... + 61279605.

Almost surely, 2^9988562412 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 9988562412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13252617420).

9988562412 is an abundant number, since it is smaller than the sum of its proper divisors (16516672428).

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

9988562412 is a wasteful number, since it uses less digits than its factorization.

9988562412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 227 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 9988562412 is about 99942.7956983394. The cubic root of 9988562412 is about 2153.6129921322.

The spelling of 9988562412 in words is "nine billion, nine hundred eighty-eight million, five hundred sixty-two thousand, four hundred twelve".