4397944489 has 27 divisors (see below), whose sum is σ = 4831584727. Its totient is φ = 4002363584.

The previous prime is 4397944477. The next prime is 4397944501. The reversal of 4397944489 is 9844497934.

The square root of 4397944489 is 66317.

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

It is an interprime number because it is at equal distance from previous prime (4397944477) and next prime (4397944501).

It can be written as a sum of positive squares in only one way, i.e., 3424005225 + 973939264 = 58515^2 + 31208^2 .

It is not a de Polignac number, because 4397944489 - 2⁷ = 4397944361 is a prime.

It is a super-2 number, since 2×4397944489² = 38683831456650942242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4397944469) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 52987242 + ... + 52987324.

Almost surely, 2^4397944489 is an apocalyptic number.

4397944489 is the 66317-th square number.

4397944489 is the 33159-th centered octagonal number.

It is an amenable number.

4397944489 is a deficient number, since it is larger than the sum of its proper divisors (433640238).

4397944489 is an frugal number, since it uses more digits than its factorization.

4397944489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 147 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 61.

The cubic root of 4397944489 is about 1638.3873311702.

The spelling of 4397944489 in words is "four billion, three hundred ninety-seven million, nine hundred forty-four thousand, four hundred eighty-nine".