9839661 has 16 divisors (see below), whose sum is σ = 14227584. Its totient is φ = 6012864.

The previous prime is 9839659. The next prime is 9839681. The reversal of 9839661 is 1669389.

9839661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9839661 - 2¹ = 9839659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9839611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5320 + ... + 6926.

It is an arithmetic number, because the mean of its divisors is an integer number (889224).

Almost surely, 2^9839661 is an apocalyptic number.

It is an amenable number.

9839661 is a deficient number, since it is larger than the sum of its proper divisors (4387923).

9839661 is a wasteful number, since it uses less digits than its factorization.

9839661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780.

The product of its digits is 69984, while the sum is 42.

The square root of 9839661 is about 3136.8233931798. The cubic root of 9839661 is about 214.2857930793.

The spelling of 9839661 in words is "nine million, eight hundred thirty-nine thousand, six hundred sixty-one".