9838661 has 6 divisors (see below), whose sum is σ = 11445030. Its totient is φ = 8433096.

The previous prime is 9838657. The next prime is 9838679. The reversal of 9838661 is 1668389.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 988036 = 2975^2 + 994^2 .

It is not a de Polignac number, because 9838661 - 2² = 9838657 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9838681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100346 + ... + 100443.

It is an arithmetic number, because the mean of its divisors is an integer number (1907505).

Almost surely, 2^9838661 is an apocalyptic number.

It is an amenable number.

9838661 is a deficient number, since it is larger than the sum of its proper divisors (1606369).

9838661 is a wasteful number, since it uses less digits than its factorization.

9838661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200803 (or 200796 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 9838661 is about 3136.6639922057. The cubic root of 9838661 is about 214.2785335795.

The spelling of 9838661 in words is "nine million, eight hundred thirty-eight thousand, six hundred sixty-one".