9918906 has 16 divisors (see below), whose sum is σ = 19927200. Its totient is φ = 3291408.

The previous prime is 9918889. The next prime is 9918917. The reversal of 9918906 is 6098199.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236 + ... + 4983.

It is an arithmetic number, because the mean of its divisors is an integer number (1245450).

Almost surely, 2^9918906 is an apocalyptic number.

9918906 is an abundant number, since it is smaller than the sum of its proper divisors (10008294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9918906 is a wasteful number, since it uses less digits than its factorization.

9918906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 9918906 is about 3149.4294721425. The cubic root of 9918906 is about 214.8595152195.

The spelling of 9918906 in words is "nine million, nine hundred eighteen thousand, nine hundred six".