4491006 has 48 divisors (see below), whose sum is σ = 10048896. Its totient is φ = 1336608.

The previous prime is 4490999. The next prime is 4491007. The reversal of 4491006 is 6001944.

4491006 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43551 + ... + 43653.

It is an arithmetic number, because the mean of its divisors is an integer number (209352).

Almost surely, 2^4491006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4491006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5024448).

4491006 is an abundant number, since it is smaller than the sum of its proper divisors (5557890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4491006 is a wasteful number, since it uses less digits than its factorization.

4491006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 4491006 is about 2119.1993771234. The cubic root of 4491006 is about 164.9862982194.

The spelling of 4491006 in words is "four million, four hundred ninety-one thousand, six".