9986799040 has 56 divisors (see below), whose sum is σ = 24067648080. Its totient is φ = 3946579968.

The previous prime is 9986799029. The next prime is 9986799041. The reversal of 9986799040 is 409976899.

It is a self number, because there is not a number n which added to its sum of digits gives 9986799040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986799041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161445 + ... + 214564.

It is an arithmetic number, because the mean of its divisors is an integer number (429779430).

Almost surely, 2^9986799040 is an apocalyptic number.

It is an amenable number.

9986799040 is an abundant number, since it is smaller than the sum of its proper divisors (14080849040).

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

9986799040 is a wasteful number, since it uses less digits than its factorization.

9986799040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376109 (or 376099 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 61.

The square root of 9986799040 is about 99933.9734024421. The cubic root of 9986799040 is about 2153.4862523609.

The spelling of 9986799040 in words is "nine billion, nine hundred eighty-six million, seven hundred ninety-nine thousand, forty".