9984691 has 4 divisors (see below), whose sum is σ = 10418832. Its totient is φ = 9550552.

The previous prime is 9984683. The next prime is 9984701. The reversal of 9984691 is 1964899.

9984691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9984691 - 2³ = 9984683 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9984631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217036 + ... + 217081.

It is an arithmetic number, because the mean of its divisors is an integer number (2604708).

Almost surely, 2^9984691 is an apocalyptic number.

9984691 is a deficient number, since it is larger than the sum of its proper divisors (434141).

9984691 is a wasteful number, since it uses less digits than its factorization.

9984691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434140.

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

The square root of 9984691 is about 3159.8561676127. The cubic root of 9984691 is about 215.3334720504. Note that the first 3 decimals are identical.

The spelling of 9984691 in words is "nine million, nine hundred eighty-four thousand, six hundred ninety-one".