9993808 has 20 divisors (see below), whose sum is σ = 21123648. Its totient is φ = 4542560.

The previous prime is 9993803. The next prime is 9993821. The reversal of 9993808 is 8083999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28216 + ... + 28567.

Almost surely, 2^9993808 is an apocalyptic number.

It is an amenable number.

9993808 is an abundant number, since it is smaller than the sum of its proper divisors (11129840).

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

9993808 is a wasteful number, since it uses less digits than its factorization.

9993808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56802 (or 56796 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 9993808 is about 3161.2984674023. The cubic root of 9993808 is about 215.3989922899.

It can be divided in two parts, 9993 and 808, that added together give a palindrome (10801).

The spelling of 9993808 in words is "nine million, nine hundred ninety-three thousand, eight hundred eight".