9905538 has 8 divisors (see below), whose sum is σ = 19811088. Its totient is φ = 3301844.

The previous prime is 9905521. The next prime is 9905561. The reversal of 9905538 is 8355099.

It is a sphenic number, since it is the product of 3 distinct primes.

9905538 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 9905496 and 9905505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825456 + ... + 825467.

It is an arithmetic number, because the mean of its divisors is an integer number (2476386).

Almost surely, 2^9905538 is an apocalyptic number.

9905538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9905538 is a wasteful number, since it uses less digits than its factorization.

9905538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650928.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 9905538 is about 3147.3064674416. The cubic root of 9905538 is about 214.7629476713.

The spelling of 9905538 in words is "nine million, nine hundred five thousand, five hundred thirty-eight".