9984945 has 32 divisors (see below), whose sum is σ = 16727040. Its totient is φ = 5080320.

The previous prime is 9984941. The next prime is 9984979. The reversal of 9984945 is 5494899.

9984945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9984945 - 2² = 9984941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9984894 and 9984903.

It is not an unprimeable number, because it can be changed into a prime (9984941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50587 + ... + 50783.

It is an arithmetic number, because the mean of its divisors is an integer number (522720).

Almost surely, 2^9984945 is an apocalyptic number.

It is an amenable number.

9984945 is a deficient number, since it is larger than the sum of its proper divisors (6742095).

9984945 is a wasteful number, since it uses less digits than its factorization.

9984945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its digits is 466560, while the sum is 48.

The square root of 9984945 is about 3159.8963590599. The cubic root of 9984945 is about 215.3352979870.

The spelling of 9984945 in words is "nine million, nine hundred eighty-four thousand, nine hundred forty-five".