300121993 has 2 divisors, whose sum is σ = 300121994. Its totient is φ = 300121992.

The previous prime is 300121937. The next prime is 300121999. The reversal of 300121993 is 399121003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289442169 + 10679824 = 17013^2 + 3268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-300121993 is a prime.

It is not a weakly prime, because it can be changed into another prime (300121999) 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 as a sum of consecutive naturals, namely, 150060996 + 150060997.

It is an arithmetic number, because the mean of its divisors is an integer number (150060997).

Almost surely, 2^300121993 is an apocalyptic number.

It is an amenable number.

300121993 is a deficient number, since it is larger than the sum of its proper divisors (1).

300121993 is an equidigital number, since it uses as much as digits as its factorization.

300121993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 300121993 is about 17324.0293523187. The cubic root of 300121993 is about 669.5236779341.

Adding to 300121993 its reverse (399121003), we get a palindrome (699242996).

The spelling of 300121993 in words is "three hundred million, one hundred twenty-one thousand, nine hundred ninety-three".