3227489721 has 27 divisors (see below), whose sum is σ = 4835634349. Its totient is φ = 2074283232.

The previous prime is 3227489693. The next prime is 3227489731. The reversal of 3227489721 is 1279847223.

The square root of 3227489721 is 56811.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 209525625 + 3017964096 = 14475^2 + 54936^2 .

It is not a de Polignac number, because 3227489721 - 2⁵ = 3227489689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3227489731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4942231 + ... + 4942883.

Almost surely, 2^3227489721 is an apocalyptic number.

3227489721 is the 56811-st square number.

3227489721 is the 28406-th centered octagonal number.

It is an amenable number.

3227489721 is a deficient number, since it is larger than the sum of its proper divisors (1608144628).

3227489721 is an frugal number, since it uses more digits than its factorization.

3227489721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370 (or 685 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The cubic root of 3227489721 is about 1477.8202818597.

The spelling of 3227489721 in words is "three billion, two hundred twenty-seven million, four hundred eighty-nine thousand, seven hundred twenty-one".