384513449 has 2 divisors, whose sum is σ = 384513450. Its totient is φ = 384513448.

The previous prime is 384513421. The next prime is 384513473. The reversal of 384513449 is 944315483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240033049 + 144480400 = 15493^2 + 12020^2 .

It is a cyclic number.

It is not a de Polignac number, because 384513449 - 2²⁸ = 116077993 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (384513049) 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, 192256724 + 192256725.

It is an arithmetic number, because the mean of its divisors is an integer number (192256725).

Almost surely, 2^384513449 is an apocalyptic number.

It is an amenable number.

384513449 is a deficient number, since it is larger than the sum of its proper divisors (1).

384513449 is an equidigital number, since it uses as much as digits as its factorization.

384513449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The square root of 384513449 is about 19609.0144831401. The cubic root of 384513449 is about 727.1720507510.

The spelling of 384513449 in words is "three hundred eighty-four million, five hundred thirteen thousand, four hundred forty-nine".