9873945 has 24 divisors (see below), whose sum is σ = 17409600. Its totient is φ = 5175456.

The previous prime is 9873943. The next prime is 9873947. The reversal of 9873945 is 5493789.

9873945 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9873943) and next prime (9873947).

It is not a de Polignac number, because 9873945 - 2¹ = 9873943 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9873945.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9873943) 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 23 ways as a sum of consecutive naturals, for example, 796 + ... + 4514.

It is an arithmetic number, because the mean of its divisors is an integer number (725400).

Almost surely, 2^9873945 is an apocalyptic number.

It is an amenable number.

9873945 is a deficient number, since it is larger than the sum of its proper divisors (7535655).

9873945 is a wasteful number, since it uses less digits than its factorization.

9873945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789 (or 3786 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 9873945 is about 3142.2834054235. The cubic root of 9873945 is about 214.5343808486.

The spelling of 9873945 in words is "nine million, eight hundred seventy-three thousand, nine hundred forty-five".