9913806 has 32 divisors (see below), whose sum is σ = 25178880. Its totient is φ = 2832408.

The previous prime is 9913753. The next prime is 9913807. The reversal of 9913806 is 6083199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12736 + ... + 13491.

It is an arithmetic number, because the mean of its divisors is an integer number (786840).

Almost surely, 2^9913806 is an apocalyptic number.

9913806 is an abundant number, since it is smaller than the sum of its proper divisors (15265074).

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

9913806 is a wasteful number, since it uses less digits than its factorization.

9913806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26245 (or 26239 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 9913806 is about 3148.6196975818. The cubic root of 9913806 is about 214.8226841622.

The spelling of 9913806 in words is "nine million, nine hundred thirteen thousand, eight hundred six".