9923904 has 56 divisors (see below), whose sum is σ = 29179520. Its totient is φ = 3307392.

The previous prime is 9923899. The next prime is 9923911. The reversal of 9923904 is 4093299.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 7 ways as a sum of consecutive naturals, for example, 1144 + ... + 4599.

Almost surely, 2^9923904 is an apocalyptic number.

It is an amenable number.

9923904 is an abundant number, since it is smaller than the sum of its proper divisors (19255616).

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

9923904 is a wasteful number, since it uses less digits than its factorization.

9923904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764 (or 5748 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 9923904 is about 3150.2228492600. Note that the first 3 decimals coincide. The cubic root of 9923904 is about 214.8955974091.

The spelling of 9923904 in words is "nine million, nine hundred twenty-three thousand, nine hundred four".