382705909 has 2 divisors, whose sum is σ = 382705910. Its totient is φ = 382705908.

The previous prime is 382705903. The next prime is 382705927. The reversal of 382705909 is 909507283.

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., 327248100 + 55457809 = 18090^2 + 7447^2 .

It is an emirp because it is prime and its reverse (909507283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 382705909 - 2⁵ = 382705877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382705903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191352954 + 191352955.

It is an arithmetic number, because the mean of its divisors is an integer number (191352955).

Almost surely, 2^382705909 is an apocalyptic number.

It is an amenable number.

382705909 is a deficient number, since it is larger than the sum of its proper divisors (1).

382705909 is an equidigital number, since it uses as much as digits as its factorization.

382705909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 382705909 is about 19562.8706738045. The cubic root of 382705909 is about 726.0308184091.

The spelling of 382705909 in words is "three hundred eighty-two million, seven hundred five thousand, nine hundred nine".