380327989 has 2 divisors, whose sum is σ = 380327990. Its totient is φ = 380327988.

The previous prime is 380327939. The next prime is 380327999. The reversal of 380327989 is 989723083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240095025 + 140232964 = 15495^2 + 11842^2 .

It is an emirp because it is prime and its reverse (989723083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380327989 - 2⁷ = 380327861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380327939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190163994 + 190163995.

It is an arithmetic number, because the mean of its divisors is an integer number (190163995).

Almost surely, 2^380327989 is an apocalyptic number.

It is an amenable number.

380327989 is a deficient number, since it is larger than the sum of its proper divisors (1).

380327989 is an equidigital number, since it uses as much as digits as its factorization.

380327989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 380327989 is about 19501.9996154241. Note that the first 3 decimals coincide. The cubic root of 380327989 is about 724.5239770162.

The spelling of 380327989 in words is "three hundred eighty million, three hundred twenty-seven thousand, nine hundred eighty-nine".