9839138 has 4 divisors (see below), whose sum is σ = 14758710. Its totient is φ = 4919568.

The previous prime is 9839129. The next prime is 9839153. The reversal of 9839138 is 8319389.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9778129 + 61009 = 3127^2 + 247^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 9839095 and 9839104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2459783 + ... + 2459786.

Almost surely, 2^9839138 is an apocalyptic number.

9839138 is a deficient number, since it is larger than the sum of its proper divisors (4919572).

9839138 is a wasteful number, since it uses less digits than its factorization.

9839138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919571.

The product of its digits is 46656, while the sum is 41.

The square root of 9839138 is about 3136.7400274808. The cubic root of 9839138 is about 214.2819964223.

The spelling of 9839138 in words is "nine million, eight hundred thirty-nine thousand, one hundred thirty-eight".