384449489 has 2 divisors, whose sum is σ = 384449490. Its totient is φ = 384449488.

The previous prime is 384449479. The next prime is 384449501. The reversal of 384449489 is 984944483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254945089 + 129504400 = 15967^2 + 11380^2 .

It is a cyclic number.

It is not a de Polignac number, because 384449489 - 2¹² = 384445393 is a prime.

It is a super-2 number, since 2×384449489² = 295602819184722242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 384449489.

It is not a weakly prime, because it can be changed into another prime (384449419) 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, 192224744 + 192224745.

It is an arithmetic number, because the mean of its divisors is an integer number (192224745).

Almost surely, 2^384449489 is an apocalyptic number.

It is an amenable number.

384449489 is a deficient number, since it is larger than the sum of its proper divisors (1).

384449489 is an equidigital number, since it uses as much as digits as its factorization.

384449489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 53.

The square root of 384449489 is about 19607.3835327409. The cubic root of 384449489 is about 727.1317292282.

The spelling of 384449489 in words is "three hundred eighty-four million, four hundred forty-nine thousand, four hundred eighty-nine".