380380309 has 2 divisors, whose sum is σ = 380380310. Its totient is φ = 380380308.

The previous prime is 380380291. The next prime is 380380391. The reversal of 380380309 is 903083083.

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., 349577809 + 30802500 = 18697^2 + 5550^2 .

It is a cyclic number.

It is not a de Polignac number, because 380380309 - 2⁵ = 380380277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380383309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190190154 + 190190155.

It is an arithmetic number, because the mean of its divisors is an integer number (190190155).

Almost surely, 2^380380309 is an apocalyptic number.

It is an amenable number.

380380309 is a deficient number, since it is larger than the sum of its proper divisors (1).

380380309 is an equidigital number, since it uses as much as digits as its factorization.

380380309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 380380309 is about 19503.3409702030. The cubic root of 380380309 is about 724.5571986543.

It can be divided in two parts, 380380 and 309, that added together give a square (380689 = 617²).

The spelling of 380380309 in words is "three hundred eighty million, three hundred eighty thousand, three hundred nine".