4491868 has 12 divisors (see below), whose sum is σ = 8132040. Its totient is φ = 2168432.

The previous prime is 4491841. The next prime is 4491871. The reversal of 4491868 is 8681944.

It is a self number, because there is not a number n which added to its sum of digits gives 4491868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19246 + ... + 19477.

It is an arithmetic number, because the mean of its divisors is an integer number (677670).

Almost surely, 2^4491868 is an apocalyptic number.

It is an amenable number.

4491868 is a deficient number, since it is larger than the sum of its proper divisors (3640172).

4491868 is a wasteful number, since it uses less digits than its factorization.

4491868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38756 (or 38754 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 4491868 is about 2119.4027460584. The cubic root of 4491868 is about 164.9968533223.

The spelling of 4491868 in words is "four million, four hundred ninety-one thousand, eight hundred sixty-eight".