9987940653 has 32 divisors (see below), whose sum is σ = 14175682560. Its totient is φ = 6237696960.

The previous prime is 9987940649. The next prime is 9987940661. The reversal of 9987940653 is 3560497899.

9987940653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9987940653 - 2² = 9987940649 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987940603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1880800 + ... + 1886102.

It is an arithmetic number, because the mean of its divisors is an integer number (442990080).

Almost surely, 2^9987940653 is an apocalyptic number.

It is an amenable number.

9987940653 is a deficient number, since it is larger than the sum of its proper divisors (4187741907).

9987940653 is a wasteful number, since it uses less digits than its factorization.

9987940653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689.

The product of its (nonzero) digits is 14696640, while the sum is 60.

The square root of 9987940653 is about 99939.6850755494. The cubic root of 9987940653 is about 2153.5683058204.

The spelling of 9987940653 in words is "nine billion, nine hundred eighty-seven million, nine hundred forty thousand, six hundred fifty-three".