7899548049 has 48 divisors (see below), whose sum is σ = 12208482000. Its totient is φ = 4904828928.

The previous prime is 7899548039. The next prime is 7899548087. The reversal of 7899548049 is 9408459987.

7899548049 is a `hidden beast` number, since 7 + 89 + 9 + 548 + 0 + 4 + 9 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1041223824 + 6858324225 = 32268^2 + 82815^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7899548049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7899548029) 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 47 ways as a sum of consecutive naturals, for example, 8502817 + ... + 8503745.

It is an arithmetic number, because the mean of its divisors is an integer number (254343375).

Almost surely, 2^7899548049 is an apocalyptic number.

It is an amenable number.

7899548049 is a deficient number, since it is larger than the sum of its proper divisors (4308933951).

7899548049 is a wasteful number, since it uses less digits than its factorization.

7899548049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The square root of 7899548049 is about 88879.4017137829. The cubic root of 7899548049 is about 1991.5937208214.

The spelling of 7899548049 in words is "seven billion, eight hundred ninety-nine million, five hundred forty-eight thousand, forty-nine".