9899875 has 16 divisors (see below), whose sum is σ = 12785760. Its totient is φ = 7644000.

The previous prime is 9899863. The next prime is 9899887. The reversal of 9899875 is 5789989.

It is an interprime number because it is at equal distance from previous prime (9899863) and next prime (9899887).

It is not a de Polignac number, because 9899875 - 2⁹ = 9899363 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2260 + ... + 4990.

It is an arithmetic number, because the mean of its divisors is an integer number (799110).

Almost surely, 2^9899875 is an apocalyptic number.

9899875 is a deficient number, since it is larger than the sum of its proper divisors (2885885).

9899875 is a wasteful number, since it uses less digits than its factorization.

9899875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775 (or 2765 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 55.

The square root of 9899875 is about 3146.4066806438. The cubic root of 9899875 is about 214.7220131821.

The spelling of 9899875 in words is "nine million, eight hundred ninety-nine thousand, eight hundred seventy-five".