9918868 has 6 divisors (see below), whose sum is σ = 17358026. Its totient is φ = 4959432.

The previous prime is 9918851. The next prime is 9918877. The reversal of 9918868 is 8688199.

It is a happy number.

9918868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9847044 + 71824 = 3138^2 + 268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239855 + ... + 1239862.

Almost surely, 2^9918868 is an apocalyptic number.

It is an amenable number.

9918868 is a deficient number, since it is larger than the sum of its proper divisors (7439158).

9918868 is a wasteful number, since it uses less digits than its factorization.

9918868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479721 (or 2479719 counting only the distinct ones).

The product of its digits is 248832, while the sum is 49.

The square root of 9918868 is about 3149.4234392981. The cubic root of 9918868 is about 214.8592408387.

The spelling of 9918868 in words is "nine million, nine hundred eighteen thousand, eight hundred sixty-eight".