9938665 has 16 divisors (see below), whose sum is σ = 13115520. Its totient is φ = 7169920.

The previous prime is 9938647. The next prime is 9938701. The reversal of 9938665 is 5668399.

It is not a de Polignac number, because 9938665 - 2⁹ = 9938153 is a prime.

9938665 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6876 + ... + 8194.

It is an arithmetic number, because the mean of its divisors is an integer number (819720).

Almost surely, 2^9938665 is an apocalyptic number.

It is an amenable number.

9938665 is a deficient number, since it is larger than the sum of its proper divisors (3176855).

9938665 is a wasteful number, since it uses less digits than its factorization.

9938665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472.

The product of its digits is 349920, while the sum is 46.

The square root of 9938665 is about 3152.5648288338. The cubic root of 9938665 is about 215.0020912001.

The spelling of 9938665 in words is "nine million, nine hundred thirty-eight thousand, six hundred sixty-five".