382953209 has 2 divisors, whose sum is σ = 382953210. Its totient is φ = 382953208.

The previous prime is 382953167. The next prime is 382953229. The reversal of 382953209 is 902359283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306775225 + 76177984 = 17515^2 + 8728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-382953209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (382953229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191476604 + 191476605.

It is an arithmetic number, because the mean of its divisors is an integer number (191476605).

Almost surely, 2^382953209 is an apocalyptic number.

It is an amenable number.

382953209 is a deficient number, since it is larger than the sum of its proper divisors (1).

382953209 is an equidigital number, since it uses as much as digits as its factorization.

382953209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 382953209 is about 19569.1903000610. The cubic root of 382953209 is about 726.1871688924.

The spelling of 382953209 in words is "three hundred eighty-two million, nine hundred fifty-three thousand, two hundred nine".