9990713587 has 4 divisors (see below), whose sum is σ = 10023256936. Its totient is φ = 9958170240.

The previous prime is 9990713549. The next prime is 9990713617. The reversal of 9990713587 is 7853170999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7853170999 = 17431 ⋅450529.

It is a cyclic number.

It is not a de Polignac number, because 9990713587 - 2¹¹ = 9990711539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9990713507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16271214 + ... + 16271827.

It is an arithmetic number, because the mean of its divisors is an integer number (2505814234).

Almost surely, 2^9990713587 is an apocalyptic number.

9990713587 is a deficient number, since it is larger than the sum of its proper divisors (32543349).

9990713587 is a wasteful number, since it uses less digits than its factorization.

9990713587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32543348.

The product of its (nonzero) digits is 4286520, while the sum is 58.

The square root of 9990713587 is about 99953.5571503086. The cubic root of 9990713587 is about 2153.7675844782.

The spelling of 9990713587 in words is "nine billion, nine hundred ninety million, seven hundred thirteen thousand, five hundred eighty-seven".