9684991 has 4 divisors (see below), whose sum is σ = 9780984. Its totient is φ = 9589000.

The previous prime is 9684973. The next prime is 9685007. The reversal of 9684991 is 1994869.

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 9684991 - 2⁵ = 9684959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9684931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47845 + ... + 48046.

It is an arithmetic number, because the mean of its divisors is an integer number (2445246).

Almost surely, 2^9684991 is an apocalyptic number.

9684991 is a deficient number, since it is larger than the sum of its proper divisors (95993).

9684991 is a wasteful number, since it uses less digits than its factorization.

9684991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95992.

The product of its digits is 139968, while the sum is 46.

The square root of 9684991 is about 3112.0718179374. The cubic root of 9684991 is about 213.1570693021.

The spelling of 9684991 in words is "nine million, six hundred eighty-four thousand, nine hundred ninety-one".