6912758449 has 27 divisors (see below), whose sum is σ = 7436799201. Its totient is φ = 6425291040.

The previous prime is 6912758441. The next prime is 6912758471. The reversal of 6912758449 is 9448572196.

The square root of 6912758449 is 83143.

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 2074164849 + 4838593600 = 45543^2 + 69560^2 .

It is not a de Polignac number, because 6912758449 - 2³ = 6912758441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6912758449.

It is not an unprimeable number, because it can be changed into a prime (6912758441) 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 26 ways as a sum of consecutive naturals, for example, 113323879 + ... + 113323939.

Almost surely, 2^6912758449 is an apocalyptic number.

6912758449 is the 83143-rd square number.

6912758449 is the 41572-nd centered octagonal number.

It is an amenable number.

6912758449 is a deficient number, since it is larger than the sum of its proper divisors (524040752).

6912758449 is an frugal number, since it uses more digits than its factorization.

6912758449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 137 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The cubic root of 6912758449 is about 1904.9509335833.

The spelling of 6912758449 in words is "six billion, nine hundred twelve million, seven hundred fifty-eight thousand, four hundred forty-nine".