9994825987 has 24 divisors (see below), whose sum is σ = 10740163280. Its totient is φ = 9275212800.

The previous prime is 9994825961. The next prime is 9994826041. The reversal of 9994825987 is 7895284999.

9994825987 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 9994825987 - 2¹⁵ = 9994793219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9994825957) 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 23 ways as a sum of consecutive naturals, for example, 23082523 + ... + 23082955.

Almost surely, 2^9994825987 is an apocalyptic number.

9994825987 is a deficient number, since it is larger than the sum of its proper divisors (745337293).

9994825987 is a wasteful number, since it uses less digits than its factorization.

9994825987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 764 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 70.

The square root of 9994825987 is about 99974.1265878327. The cubic root of 9994825987 is about 2154.0630568269.

The spelling of 9994825987 in words is "nine billion, nine hundred ninety-four million, eight hundred twenty-five thousand, nine hundred eighty-seven".