9684391 has 4 divisors (see below), whose sum is σ = 9703432. Its totient is φ = 9665352.

The previous prime is 9684379. The next prime is 9684413. The reversal of 9684391 is 1934869.

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

It is a cyclic number.

It is not a de Polignac number, because 9684391 - 2⁵ = 9684359 is a prime.

It is a Duffinian number.

9684391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9684341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8736 + ... + 9781.

It is an arithmetic number, because the mean of its divisors is an integer number (2425858).

Almost surely, 2^9684391 is an apocalyptic number.

9684391 is a deficient number, since it is larger than the sum of its proper divisors (19041).

9684391 is a wasteful number, since it uses less digits than its factorization.

9684391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19040.

The product of its digits is 46656, while the sum is 40.

The square root of 9684391 is about 3111.9754176407. The cubic root of 9684391 is about 213.1526674091.

The spelling of 9684391 in words is "nine million, six hundred eighty-four thousand, three hundred ninety-one".