9949904 has 10 divisors (see below), whose sum is σ = 19277970. Its totient is φ = 4974944.

The previous prime is 9949889. The next prime is 9949909. The reversal of 9949904 is 4099499.

It is a happy number.

9949904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9909904 + 40000 = 3148^2 + 200^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310919 + ... + 310950.

It is an arithmetic number, because the mean of its divisors is an integer number (1927797).

Almost surely, 2^9949904 is an apocalyptic number.

It is an amenable number.

9949904 is a deficient number, since it is larger than the sum of its proper divisors (9328066).

9949904 is a wasteful number, since it uses less digits than its factorization.

9949904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621877 (or 621871 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 9949904 is about 3154.3468420578. The cubic root of 9949904 is about 215.0831047038.

The spelling of 9949904 in words is "nine million, nine hundred forty-nine thousand, nine hundred four".