4491486 has 48 divisors (see below), whose sum is σ = 10707840. Its totient is φ = 1354320.

The previous prime is 4491481. The next prime is 4491503. The reversal of 4491486 is 6841944.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 4491486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491481) 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, 7581 + ... + 8151.

It is an arithmetic number, because the mean of its divisors is an integer number (223080).

Almost surely, 2^4491486 is an apocalyptic number.

4491486 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 4491486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5353920).

4491486 is an abundant number, since it is smaller than the sum of its proper divisors (6216354).

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

4491486 is a wasteful number, since it uses less digits than its factorization.

4491486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 618 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 4491486 is about 2119.3126244139. The cubic root of 4491486 is about 164.9921759375.

The spelling of 4491486 in words is "four million, four hundred ninety-one thousand, four hundred eighty-six".