299899912649 has 2 divisors, whose sum is σ = 299899912650. Its totient is φ = 299899912648.

The previous prime is 299899912643. The next prime is 299899912667. The reversal of 299899912649 is 946219998992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294313845049 + 5586067600 = 542507^2 + 74740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-299899912649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 299899912649.

It is not a weakly prime, because it can be changed into another prime (299899912643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149949956324 + 149949956325.

It is an arithmetic number, because the mean of its divisors is an integer number (149949956325).

Almost surely, 2^299899912649 is an apocalyptic number.

It is an amenable number.

299899912649 is a deficient number, since it is larger than the sum of its proper divisors (1).

299899912649 is an equidigital number, since it uses as much as digits as its factorization.

299899912649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408146688, while the sum is 77.

The spelling of 299899912649 in words is "two hundred ninety-nine billion, eight hundred ninety-nine million, nine hundred twelve thousand, six hundred forty-nine".