9984861 has 12 divisors (see below), whose sum is σ = 15181920. Its totient is φ = 6306120.

The previous prime is 9984859. The next prime is 9984869. The reversal of 9984861 is 1684899.

It is not a de Polignac number, because 9984861 - 2¹ = 9984859 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9984869) 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 11 ways as a sum of consecutive naturals, for example, 29025 + ... + 29366.

It is an arithmetic number, because the mean of its divisors is an integer number (1265160).

Almost surely, 2^9984861 is an apocalyptic number.

It is an amenable number.

9984861 is a deficient number, since it is larger than the sum of its proper divisors (5197059).

9984861 is a wasteful number, since it uses less digits than its factorization.

9984861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58416 (or 58413 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 9984861 is about 3159.8830674568. The cubic root of 9984861 is about 215.3346941374.

The spelling of 9984861 in words is "nine million, nine hundred eighty-four thousand, eight hundred sixty-one".