9989241724 has 72 divisors (see below), whose sum is σ = 22899663360. Its totient is φ = 3766341600.

The previous prime is 9989241707. The next prime is 9989241733. The reversal of 9989241724 is 4271429899.

It is a happy number.

It is a congruent 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, 7894 + ... + 141565.

It is an arithmetic number, because the mean of its divisors is an integer number (318050880).

Almost surely, 2^9989241724 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 9989241724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11449831680).

9989241724 is an abundant number, since it is smaller than the sum of its proper divisors (12910421636).

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

9989241724 is a wasteful number, since it uses less digits than its factorization.

9989241724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149519 (or 149510 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 9989241724 is about 99946.1941446497. The cubic root of 9989241724 is about 2153.6618127040.

The spelling of 9989241724 in words is "nine billion, nine hundred eighty-nine million, two hundred forty-one thousand, seven hundred twenty-four".