9984145 has 4 divisors (see below), whose sum is σ = 11980980. Its totient is φ = 7987312.

The previous prime is 9984133. The next prime is 9984167. The reversal of 9984145 is 5414899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1481089 + 8503056 = 1217^2 + 2916^2 .

It is a cyclic number.

It is not a de Polignac number, because 9984145 - 2¹¹ = 9982097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9984098 and 9984107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998410 + ... + 998419.

It is an arithmetic number, because the mean of its divisors is an integer number (2995245).

Almost surely, 2^9984145 is an apocalyptic number.

It is an amenable number.

9984145 is a deficient number, since it is larger than the sum of its proper divisors (1996835).

9984145 is a wasteful number, since it uses less digits than its factorization.

9984145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996834.

The product of its digits is 51840, while the sum is 40.

The square root of 9984145 is about 3159.7697700940. The cubic root of 9984145 is about 215.3295469008.

The spelling of 9984145 in words is "nine million, nine hundred eighty-four thousand, one hundred forty-five".