299222813 has 2 divisors, whose sum is σ = 299222814. Its totient is φ = 299222812.

The previous prime is 299222779. The next prime is 299222827. The reversal of 299222813 is 318222992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292478404 + 6744409 = 17102^2 + 2597^2 .

It is a cyclic number.

It is not a de Polignac number, because 299222813 - 2⁸ = 299222557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (299222213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149611406 + 149611407.

It is an arithmetic number, because the mean of its divisors is an integer number (149611407).

Almost surely, 2^299222813 is an apocalyptic number.

It is an amenable number.

299222813 is a deficient number, since it is larger than the sum of its proper divisors (1).

299222813 is an equidigital number, since it uses as much as digits as its factorization.

299222813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 299222813 is about 17298.0580701997. The cubic root of 299222813 is about 668.8543672906.

The spelling of 299222813 in words is "two hundred ninety-nine million, two hundred twenty-two thousand, eight hundred thirteen".