9838905 has 8 divisors (see below), whose sum is σ = 15742272. Its totient is φ = 5247408.

The previous prime is 9838879. The next prime is 9838919. The reversal of 9838905 is 5098389.

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

It is not a de Polignac number, because 9838905 - 2¹² = 9834809 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

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, 327949 + ... + 327978.

It is an arithmetic number, because the mean of its divisors is an integer number (1967784).

Almost surely, 2^9838905 is an apocalyptic number.

It is an amenable number.

9838905 is a deficient number, since it is larger than the sum of its proper divisors (5903367).

9838905 is a wasteful number, since it uses less digits than its factorization.

9838905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655935.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 9838905 is about 3136.7028867905. The cubic root of 9838905 is about 214.2803049428.

The spelling of 9838905 in words is "nine million, eight hundred thirty-eight thousand, nine hundred five".