9909964 has 12 divisors (see below), whose sum is σ = 18096624. Its totient is φ = 4739504.

The previous prime is 9909961. The next prime is 9909989. The reversal of 9909964 is 4699099.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (9909961) 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, 53767 + ... + 53950.

It is an arithmetic number, because the mean of its divisors is an integer number (1508052).

Almost surely, 2^9909964 is an apocalyptic number.

It is an amenable number.

9909964 is a deficient number, since it is larger than the sum of its proper divisors (8186660).

9909964 is a wasteful number, since it uses less digits than its factorization.

9909964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107744 (or 107742 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 9909964 is about 3148.0095298458. The cubic root of 9909964 is about 214.7949297560.

The spelling of 9909964 in words is "nine million, nine hundred nine thousand, nine hundred sixty-four".