4491530 has 8 divisors (see below), whose sum is σ = 8084772. Its totient is φ = 1796608.

The previous prime is 4491503. The next prime is 4491533. The reversal of 4491530 is 351944.

It can be written as a sum of positive squares in 2 ways, for example, as 4490161 + 1369 = 2119^2 + 37^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4491530.

It is not an unprimeable number, because it can be changed into a prime (4491533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224567 + ... + 224586.

Almost surely, 2^4491530 is an apocalyptic number.

4491530 is a deficient number, since it is larger than the sum of its proper divisors (3593242).

4491530 is a wasteful number, since it uses less digits than its factorization.

4491530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449160.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 4491530 is about 2119.3230051127. The cubic root of 4491530 is about 164.9927147074.

The spelling of 4491530 in words is "four million, four hundred ninety-one thousand, five hundred thirty".