383641409 has 2 divisors, whose sum is σ = 383641410. Its totient is φ = 383641408.

The previous prime is 383641381. The next prime is 383641411. The reversal of 383641409 is 904146383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283080625 + 100560784 = 16825^2 + 10028^2 .

It is a cyclic number.

It is not a de Polignac number, because 383641409 - 2¹⁶ = 383575873 is a prime.

Together with 383641411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (383641429) 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, 191820704 + 191820705.

It is an arithmetic number, because the mean of its divisors is an integer number (191820705).

Almost surely, 2^383641409 is an apocalyptic number.

It is an amenable number.

383641409 is a deficient number, since it is larger than the sum of its proper divisors (1).

383641409 is an equidigital number, since it uses as much as digits as its factorization.

383641409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 383641409 is about 19586.7661700445. The cubic root of 383641409 is about 726.6219155965.

The spelling of 383641409 in words is "three hundred eighty-three million, six hundred forty-one thousand, four hundred nine".