299668393 has 2 divisors, whose sum is σ = 299668394. Its totient is φ = 299668392.

The previous prime is 299668363. The next prime is 299668451. The reversal of 299668393 is 393866992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244359424 + 55308969 = 15632^2 + 7437^2 .

It is a cyclic number.

It is not a de Polignac number, because 299668393 - 2⁹ = 299667881 is a prime.

It is a super-2 number, since 2×299668393² = 179602291526404898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (299668363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149834196 + 149834197.

It is an arithmetic number, because the mean of its divisors is an integer number (149834197).

Almost surely, 2^299668393 is an apocalyptic number.

It is an amenable number.

299668393 is a deficient number, since it is larger than the sum of its proper divisors (1).

299668393 is an equidigital number, since it uses as much as digits as its factorization.

299668393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 55.

The square root of 299668393 is about 17310.9327593865. The cubic root of 299668393 is about 669.1862050880.

The spelling of 299668393 in words is "two hundred ninety-nine million, six hundred sixty-eight thousand, three hundred ninety-three".