3985045 has 4 divisors (see below), whose sum is σ = 4782060. Its totient is φ = 3188032.

The previous prime is 3985039. The next prime is 3985057. The reversal of 3985045 is 5405893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5405893 = 47 ⋅115019.

It can be written as a sum of positive squares in 2 ways, for example, as 1656369 + 2328676 = 1287^2 + 1526^2 .

It is a cyclic number.

It is not a de Polignac number, because 3985045 - 2⁵ = 3985013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3985045.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 398500 + ... + 398509.

It is an arithmetic number, because the mean of its divisors is an integer number (1195515).

Almost surely, 2^3985045 is an apocalyptic number.

It is an amenable number.

3985045 is a deficient number, since it is larger than the sum of its proper divisors (797015).

3985045 is an equidigital number, since it uses as much as digits as its factorization.

3985045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797014.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 3985045 is about 1996.2577488892. The cubic root of 3985045 is about 158.5420282819.

The spelling of 3985045 in words is "three million, nine hundred eighty-five thousand, forty-five".