9917875 has 16 divisors (see below), whose sum is σ = 13504608. Its totient is φ = 7212000.

The previous prime is 9917849. The next prime is 9917881. The reversal of 9917875 is 5787199.

It is not a de Polignac number, because 9917875 - 2⁹ = 9917363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2232 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (844038).

Almost surely, 2^9917875 is an apocalyptic number.

9917875 is a deficient number, since it is larger than the sum of its proper divisors (3586733).

9917875 is a wasteful number, since it uses less digits than its factorization.

9917875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7239 (or 7229 counting only the distinct ones).

The product of its digits is 158760, while the sum is 46.

The square root of 9917875 is about 3149.2657874495. The cubic root of 9917875 is about 214.8520705868.

The spelling of 9917875 in words is "nine million, nine hundred seventeen thousand, eight hundred seventy-five".