380495009 has 2 divisors, whose sum is σ = 380495010. Its totient is φ = 380495008.

The previous prime is 380494999. The next prime is 380495021. The reversal of 380495009 is 900594083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350737984 + 29757025 = 18728^2 + 5455^2 .

It is an emirp because it is prime and its reverse (900594083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380495009 - 2¹⁶ = 380429473 is a prime.

It is not a weakly prime, because it can be changed into another prime (380495039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190247504 + 190247505.

It is an arithmetic number, because the mean of its divisors is an integer number (190247505).

Almost surely, 2^380495009 is an apocalyptic number.

It is an amenable number.

380495009 is a deficient number, since it is larger than the sum of its proper divisors (1).

380495009 is an equidigital number, since it uses as much as digits as its factorization.

380495009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 380495009 is about 19506.2812704011. The cubic root of 380495009 is about 724.6300190718.

The spelling of 380495009 in words is "three hundred eighty million, four hundred ninety-five thousand, nine".