3984745 has 8 divisors (see below), whose sum is σ = 4946760. Its totient is φ = 3077760.

The previous prime is 3984731. The next prime is 3984751. The reversal of 3984745 is 5474893.

It can be written as a sum of positive squares in 4 ways, for example, as 1382976 + 2601769 = 1176^2 + 1613^2 .

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

It is not a de Polignac number, because 3984745 - 2¹¹ = 3982697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3984698 and 3984707.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13596 + ... + 13885.

It is an arithmetic number, because the mean of its divisors is an integer number (618345).

Almost surely, 2^3984745 is an apocalyptic number.

It is an amenable number.

3984745 is a deficient number, since it is larger than the sum of its proper divisors (962015).

3984745 is a wasteful number, since it uses less digits than its factorization.

3984745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27515.

The product of its digits is 120960, while the sum is 40.

The square root of 3984745 is about 1996.1826068774. The cubic root of 3984745 is about 158.5380497570.

The spelling of 3984745 in words is "three million, nine hundred eighty-four thousand, seven hundred forty-five".