9906212 has 12 divisors (see below), whose sum is σ = 17369520. Its totient is φ = 4943496.

The previous prime is 9906209. The next prime is 9906227. The reversal of 9906212 is 2126099.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239 + ... + 4457.

It is an arithmetic number, because the mean of its divisors is an integer number (1447460).

Almost surely, 2^9906212 is an apocalyptic number.

It is an amenable number.

9906212 is a deficient number, since it is larger than the sum of its proper divisors (7463308).

9906212 is a wasteful number, since it uses less digits than its factorization.

9906212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810 (or 4808 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 9906212 is about 3147.4135413066. The cubic root of 9906212 is about 214.7678185810.

The spelling of 9906212 in words is "nine million, nine hundred six thousand, two hundred twelve".