3981185 has 16 divisors (see below), whose sum is σ = 5370624. Its totient is φ = 2811072.

The previous prime is 3981181. The next prime is 3981191. The reversal of 3981185 is 5811893.

It is a cyclic number.

It is not a de Polignac number, because 3981185 - 2² = 3981181 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981181) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 164 + ... + 2826.

It is an arithmetic number, because the mean of its divisors is an integer number (335664).

Almost surely, 2^3981185 is an apocalyptic number.

It is an amenable number.

3981185 is a deficient number, since it is larger than the sum of its proper divisors (1389439).

3981185 is a wasteful number, since it uses less digits than its factorization.

3981185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704.

The product of its digits is 8640, while the sum is 35.

The square root of 3981185 is about 1995.2907056366. The cubic root of 3981185 is about 158.4908226765.

The spelling of 3981185 in words is "three million, nine hundred eighty-one thousand, one hundred eighty-five".