300220993 has 2 divisors, whose sum is σ = 300220994. Its totient is φ = 300220992.

The previous prime is 300220981. The next prime is 300221011. The reversal of 300220993 is 399022003.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198049329 + 102171664 = 14073^2 + 10108^2 .

It is an emirp because it is prime and its reverse (399022003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 300220993 - 2¹⁷ = 300089921 is a prime.

It is not a weakly prime, because it can be changed into another prime (300220693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150110496 + 150110497.

It is an arithmetic number, because the mean of its divisors is an integer number (150110497).

Almost surely, 2^300220993 is an apocalyptic number.

It is an amenable number.

300220993 is a deficient number, since it is larger than the sum of its proper divisors (1).

300220993 is an equidigital number, since it uses as much as digits as its factorization.

300220993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 300220993 is about 17326.8864196658. The cubic root of 300220993 is about 669.5972875093.

Adding to 300220993 its reverse (399022003), we get a palindrome (699242996).

The spelling of 300220993 in words is "three hundred million, two hundred twenty thousand, nine hundred ninety-three".