9919648 has 12 divisors (see below), whose sum is σ = 19529370. Its totient is φ = 4959808.

The previous prime is 9919607. The next prime is 9919667. The reversal of 9919648 is 8469199.

It can be written as a sum of positive squares in only one way, i.e., 9809424 + 110224 = 3132^2 + 332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9919598 and 9919607.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 154963 + ... + 155026.

Almost surely, 2^9919648 is an apocalyptic number.

It is an amenable number.

9919648 is a deficient number, since it is larger than the sum of its proper divisors (9609722).

9919648 is a wasteful number, since it uses less digits than its factorization.

9919648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309999 (or 309991 counting only the distinct ones).

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

The square root of 9919648 is about 3149.5472690531. The cubic root of 9919648 is about 214.8648727252.

The spelling of 9919648 in words is "nine million, nine hundred nineteen thousand, six hundred forty-eight".