9987499 has 8 divisors (see below), whose sum is σ = 10202112. Its totient is φ = 9775080.

The previous prime is 9987493. The next prime is 9987503. The reversal of 9987499 is 9947899.

9987499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9987499 - 2⁹ = 9986987 is a prime.

It is an Ulam number.

It is a Duffinian number.

9987499 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9987493) 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, 11142 + ... + 12004.

It is an arithmetic number, because the mean of its divisors is an integer number (1275264).

Almost surely, 2^9987499 is an apocalyptic number.

9987499 is a deficient number, since it is larger than the sum of its proper divisors (214613).

9987499 is a wasteful number, since it uses less digits than its factorization.

9987499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097.

The product of its digits is 1469664, while the sum is 55.

The square root of 9987499 is about 3160.3004603993. The cubic root of 9987499 is about 215.3536562743.

The spelling of 9987499 in words is "nine million, nine hundred eighty-seven thousand, four hundred ninety-nine".