9939838 has 8 divisors (see below), whose sum is σ = 14945040. Its totient is φ = 4958160.

The previous prime is 9939833. The next prime is 9939857. The reversal of 9939838 is 8389399.

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

It is a junction number, because it is equal to n+sod(n) for n = 9939791 and 9939800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4783 + ... + 6538.

It is an arithmetic number, because the mean of its divisors is an integer number (1868130).

Almost surely, 2^9939838 is an apocalyptic number.

9939838 is a deficient number, since it is larger than the sum of its proper divisors (5005202).

9939838 is a wasteful number, since it uses less digits than its factorization.

9939838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11762.

The product of its digits is 419904, while the sum is 49.

The square root of 9939838 is about 3152.7508623423. The cubic root of 9939838 is about 215.0105493291.

The spelling of 9939838 in words is "nine million, nine hundred thirty-nine thousand, eight hundred thirty-eight".