9905523404 has 24 divisors (see below), whose sum is σ = 20184843168. Its totient is φ = 4165125120.

The previous prime is 9905523391. The next prime is 9905523421. The reversal of 9905523404 is 4043255099.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3335957 + ... + 3338924.

It is an arithmetic number, because the mean of its divisors is an integer number (841035132).

Almost surely, 2^9905523404 is an apocalyptic number.

It is an amenable number.

9905523404 is an abundant number, since it is smaller than the sum of its proper divisors (10279319764).

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

9905523404 is a wasteful number, since it uses less digits than its factorization.

9905523404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674945 (or 6674943 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 9905523404 is about 99526.4959897614. The cubic root of 9905523404 is about 2147.6284218546.

The spelling of 9905523404 in words is "nine billion, nine hundred five million, five hundred twenty-three thousand, four hundred four".