4091944 has 16 divisors (see below), whose sum is σ = 7694100. Its totient is φ = 2040192.

The previous prime is 4091933. The next prime is 4091947. The reversal of 4091944 is 4491904.

It can be written as a sum of positive squares in 2 ways, for example, as 3802500 + 289444 = 1950^2 + 538^2 .

It is not an unprimeable number, because it can be changed into a prime (4091947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4522 + ... + 5350.

Almost surely, 2^4091944 is an apocalyptic number.

It is an amenable number.

4091944 is a deficient number, since it is larger than the sum of its proper divisors (3602156).

4091944 is a wasteful number, since it uses less digits than its factorization.

4091944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 4091944 is about 2022.8554075860. The cubic root of 4091944 is about 159.9471700582.

The spelling of 4091944 in words is "four million, ninety-one thousand, nine hundred forty-four".