9987280499 has 12 divisors (see below), whose sum is σ = 11620441800. Its totient is φ = 8558621568.

The previous prime is 9987280493. The next prime is 9987280549. The reversal of 9987280499 is 9940827899.

It is not a de Polignac number, because 9987280499 - 2²⁰ = 9986231923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9987280493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227747 + ... + 268035.

It is an arithmetic number, because the mean of its divisors is an integer number (968370150).

Almost surely, 2^9987280499 is an apocalyptic number.

9987280499 is a deficient number, since it is larger than the sum of its proper divisors (1633161301).

9987280499 is a wasteful number, since it uses less digits than its factorization.

9987280499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45362 (or 45355 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 65.

The square root of 9987280499 is about 99936.3822589151. The cubic root of 9987280499 is about 2153.5208579996.

The spelling of 9987280499 in words is "nine billion, nine hundred eighty-seven million, two hundred eighty thousand, four hundred ninety-nine".