8389277649 has 15 divisors (see below), whose sum is σ = 12533362347. Its totient is φ = 5592302208.

The previous prime is 8389277609. The next prime is 8389277681. The reversal of 8389277649 is 9467729838.

The square root of 8389277649 is 91593.

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

8389277649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5519747025 + 2869530624 = 74295^2 + 53568^2 .

It is not a de Polignac number, because 8389277649 - 2⁹ = 8389277137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8389277609) 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 14 ways as a sum of consecutive naturals, for example, 819249 + ... + 829425.

Almost surely, 2^8389277649 is an apocalyptic number.

8389277649 is the 91593-rd square number.

8389277649 is the 45797-th centered octagonal number.

It is an amenable number.

8389277649 is a deficient number, since it is larger than the sum of its proper divisors (4144084698).

8389277649 is an frugal number, since it uses more digits than its factorization.

8389277649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20366 (or 10180 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The cubic root of 8389277649 is about 2031.9274121342.

The spelling of 8389277649 in words is "eight billion, three hundred eighty-nine million, two hundred seventy-seven thousand, six hundred forty-nine".