380319209 has 2 divisors, whose sum is σ = 380319210. Its totient is φ = 380319208.

The previous prime is 380319179. The next prime is 380319211. The reversal of 380319209 is 902913083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352387984 + 27931225 = 18772^2 + 5285^2 .

It is an emirp because it is prime and its reverse (902913083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380319209 - 2¹⁶ = 380253673 is a prime.

Together with 380319211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (380319229) 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, 190159604 + 190159605.

It is an arithmetic number, because the mean of its divisors is an integer number (190159605).

Almost surely, 2^380319209 is an apocalyptic number.

It is an amenable number.

380319209 is a deficient number, since it is larger than the sum of its proper divisors (1).

380319209 is an equidigital number, since it uses as much as digits as its factorization.

380319209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 380319209 is about 19501.7745090030. The cubic root of 380319209 is about 724.5184016798.

The spelling of 380319209 in words is "three hundred eighty million, three hundred nineteen thousand, two hundred nine".