9984651 has 8 divisors (see below), whose sum is σ = 13473600. Its totient is φ = 6576072.

The previous prime is 9984649. The next prime is 9984673. The reversal of 9984651 is 1564899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9984651 - 2¹ = 9984649 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19801 + ... + 20298.

It is an arithmetic number, because the mean of its divisors is an integer number (1684200).

Almost surely, 2^9984651 is an apocalyptic number.

9984651 is a deficient number, since it is larger than the sum of its proper divisors (3488949).

9984651 is a wasteful number, since it uses less digits than its factorization.

9984651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40185.

The product of its digits is 77760, while the sum is 42.

The square root of 9984651 is about 3159.8498382043. The cubic root of 9984651 is about 215.3331844985. Note that the first 3 decimals are identical.

The spelling of 9984651 in words is "nine million, nine hundred eighty-four thousand, six hundred fifty-one".