4491166 has 4 divisors (see below), whose sum is σ = 6736752. Its totient is φ = 2245582.

The previous prime is 4491161. The next prime is 4491169. The reversal of 4491166 is 6611944.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491161) 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 as a sum of consecutive naturals, namely, 1122790 + ... + 1122793.

It is an arithmetic number, because the mean of its divisors is an integer number (1684188).

Almost surely, 2^4491166 is an apocalyptic number.

4491166 is a deficient number, since it is larger than the sum of its proper divisors (2245586).

4491166 is a wasteful number, since it uses less digits than its factorization.

4491166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245585.

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

The square root of 4491166 is about 2119.2371268926. The cubic root of 4491166 is about 164.9882575053.

The spelling of 4491166 in words is "four million, four hundred ninety-one thousand, one hundred sixty-six".