380459909 has 2 divisors, whose sum is σ = 380459910. Its totient is φ = 380459908.

The previous prime is 380459879. The next prime is 380459927. The reversal of 380459909 is 909954083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380445025 + 14884 = 19505^2 + 122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380459909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380459929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190229954 + 190229955.

It is an arithmetic number, because the mean of its divisors is an integer number (190229955).

Almost surely, 2^380459909 is an apocalyptic number.

It is an amenable number.

380459909 is a deficient number, since it is larger than the sum of its proper divisors (1).

380459909 is an equidigital number, since it uses as much as digits as its factorization.

380459909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 380459909 is about 19505.3815394624. The cubic root of 380459909 is about 724.6077364354.

The spelling of 380459909 in words is "three hundred eighty million, four hundred fifty-nine thousand, nine hundred nine".