4450721 has 8 divisors (see below), whose sum is σ = 4874688. Its totient is φ = 4030000.

The previous prime is 4450711. The next prime is 4450729. The reversal of 4450721 is 1270544.

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

It is a cyclic number.

It is not a de Polignac number, because 4450721 - 2⁶ = 4450657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4450729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771 + ... + 4071.

It is an arithmetic number, because the mean of its divisors is an integer number (609336).

Almost surely, 2^4450721 is an apocalyptic number.

It is an amenable number.

4450721 is a deficient number, since it is larger than the sum of its proper divisors (423967).

4450721 is a wasteful number, since it uses less digits than its factorization.

4450721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 4450721 is about 2109.6731974408. The cubic root of 4450721 is about 164.4914984689.

The spelling of 4450721 in words is "four million, four hundred fifty thousand, seven hundred twenty-one".