4490321 has 4 divisors (see below), whose sum is σ = 4898544. Its totient is φ = 4082100.

The previous prime is 4490309. The next prime is 4490347. The reversal of 4490321 is 1230944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4490321 - 2¹⁰ = 4489297 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4490371) 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, 204095 + ... + 204116.

It is an arithmetic number, because the mean of its divisors is an integer number (1224636).

Almost surely, 2^4490321 is an apocalyptic number.

It is an amenable number.

4490321 is a deficient number, since it is larger than the sum of its proper divisors (408223).

4490321 is a wasteful number, since it uses less digits than its factorization.

4490321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408222.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 4490321 is about 2119.0377533211. The cubic root of 4490321 is about 164.9779095005.

The spelling of 4490321 in words is "four million, four hundred ninety thousand, three hundred twenty-one".