6744844129 has 9 divisors (see below), whose sum is σ = 7166421651. Its totient is φ = 6346774560.

The previous prime is 6744844123. The next prime is 6744844151. The reversal of 6744844129 is 9214484476.

The square root of 6744844129 is 82127.

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., 5251176225 + 1493667904 = 72465^2 + 38648^2 .

It is not a de Polignac number, because 6744844129 - 2³ = 6744844121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6744844121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1393744 + ... + 1398574.

Almost surely, 2^6744844129 is an apocalyptic number.

6744844129 is the 82127-th square number.

6744844129 is the 41064-th centered octagonal number.

It is an amenable number.

6744844129 is a deficient number, since it is larger than the sum of its proper divisors (421577522).

6744844129 is an frugal number, since it uses more digits than its factorization.

6744844129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9696 (or 4848 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The cubic root of 6744844129 is about 1889.4002678011.

Multiplying 6744844129 by its sum of digits (49), we get a square (330497362321 = 574889²).

The spelling of 6744844129 in words is "six billion, seven hundred forty-four million, eight hundred forty-four thousand, one hundred twenty-nine".