9919968 has 24 divisors (see below), whose sum is σ = 26040168. Its totient is φ = 3306624.

The previous prime is 9919963. The next prime is 9919979. The reversal of 9919968 is 8699199.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 9919968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9919963) 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 3 ways as a sum of consecutive naturals, for example, 51571 + ... + 51762.

It is an arithmetic number, because the mean of its divisors is an integer number (1085007).

Almost surely, 2^9919968 is an apocalyptic number.

It is an amenable number.

9919968 is an abundant number, since it is smaller than the sum of its proper divisors (16120200).

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

9919968 is a wasteful number, since it uses less digits than its factorization.

9919968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103346 (or 103338 counting only the distinct ones).

The product of its digits is 314928, while the sum is 51.

The square root of 9919968 is about 3149.5980695955. The cubic root of 9919968 is about 214.8671831573.

The spelling of 9919968 in words is "nine million, nine hundred nineteen thousand, nine hundred sixty-eight".