9999964 has 12 divisors (see below), whose sum is σ = 18846184. Its totient is φ = 4615344.

The previous prime is 9999943. The next prime is 9999971. The reversal of 9999964 is 4699999.

It is a nialpdrome in base 10.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 96102 + ... + 96205.

Almost surely, 2^9999964 is an apocalyptic number.

It is an amenable number.

9999964 is a deficient number, since it is larger than the sum of its proper divisors (8846220).

9999964 is a wasteful number, since it uses less digits than its factorization.

9999964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192324 (or 192322 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 55.

The square root of 9999964 is about 3162.2719680635. The cubic root of 9999964 is about 215.4432104707.

It can be divided in two parts, 999996 and 4, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 9999964 in words is "nine million, nine hundred ninety-nine thousand, nine hundred sixty-four".