9918975 has 36 divisors (see below), whose sum is σ = 18042248. Its totient is φ = 4804800.

The previous prime is 9918959. The next prime is 9918983. The reversal of 9918975 is 5798199.

It is not a de Polignac number, because 9918975 - 2⁴ = 9918959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 8529 + ... + 9621.

Almost surely, 2^9918975 is an apocalyptic number.

9918975 is a deficient number, since it is larger than the sum of its proper divisors (8123273).

9918975 is a wasteful number, since it uses less digits than its factorization.

9918975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1112 counting only the distinct ones).

The product of its digits is 204120, while the sum is 48.

The square root of 9918975 is about 3149.4404264885. The cubic root of 9918975 is about 214.8600134355.

The spelling of 9918975 in words is "nine million, nine hundred eighteen thousand, nine hundred seventy-five".