4409889649 has 9 divisors (see below), whose sum is σ = 4848037131. Its totient is φ = 4008326520.

The previous prime is 4409889647. The next prime is 4409889677. The reversal of 4409889649 is 9469889044.

The square root of 4409889649 is 66407.

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

It can be written as a sum of positive squares in only one way, i.e., 865830625 + 3544059024 = 29425^2 + 59532^2 .

It is not a de Polignac number, because 4409889649 - 2¹ = 4409889647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4409889647) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 727459 + ... + 733495.

Almost surely, 2^4409889649 is an apocalyptic number.

4409889649 is the 66407-th square number.

4409889649 is the 33204-th centered octagonal number.

It is an amenable number.

4409889649 is a deficient number, since it is larger than the sum of its proper divisors (438147482).

4409889649 is an frugal number, since it uses more digits than its factorization.

4409889649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12096 (or 6048 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 61.

The cubic root of 4409889649 is about 1639.8693194752.

The spelling of 4409889649 in words is "four billion, four hundred nine million, eight hundred eighty-nine thousand, six hundred forty-nine".