9963906 has 32 divisors (see below), whose sum is σ = 20632320. Its totient is φ = 3206016.

The previous prime is 9963883. The next prime is 9963913. The reversal of 9963906 is 6093699.

It is a Curzon number.

It is a nialpdrome in base 6.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24900 + ... + 25296.

It is an arithmetic number, because the mean of its divisors is an integer number (644760).

Almost surely, 2^9963906 is an apocalyptic number.

9963906 is an abundant number, since it is smaller than the sum of its proper divisors (10668414).

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

9963906 is a wasteful number, since it uses less digits than its factorization.

9963906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 9963906 is about 3156.5655386828. The cubic root of 9963906 is about 215.1839492965.

The spelling of 9963906 in words is "nine million, nine hundred sixty-three thousand, nine hundred six".