299138813 has 2 divisors, whose sum is σ = 299138814. Its totient is φ = 299138812.

The previous prime is 299138797. The next prime is 299138843. The reversal of 299138813 is 318831992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206267044 + 92871769 = 14362^2 + 9637^2 .

It is a cyclic number.

It is not a de Polignac number, because 299138813 - 2⁴ = 299138797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (299138843) 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, 149569406 + 149569407.

It is an arithmetic number, because the mean of its divisors is an integer number (149569407).

Almost surely, 2^299138813 is an apocalyptic number.

It is an amenable number.

299138813 is a deficient number, since it is larger than the sum of its proper divisors (1).

299138813 is an equidigital number, since it uses as much as digits as its factorization.

299138813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 44.

The square root of 299138813 is about 17295.6298815626. The cubic root of 299138813 is about 668.7917728819.

The spelling of 299138813 in words is "two hundred ninety-nine million, one hundred thirty-eight thousand, eight hundred thirteen".