384449391 has 12 divisors (see below), whose sum is σ = 560231568. Its totient is φ = 254030784.

The previous prime is 384449371. The next prime is 384449399. The reversal of 384449391 is 193944483.

It is a happy number.

384449391 is a `hidden beast` number, since 38 + 44 + 493 + 91 = 666.

It is not a de Polignac number, because 384449391 - 2⁶ = 384449327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384449399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187995 + ... + 190028.

It is an arithmetic number, because the mean of its divisors is an integer number (46685964).

Almost surely, 2^384449391 is an apocalyptic number.

384449391 is a deficient number, since it is larger than the sum of its proper divisors (175782177).

384449391 is a wasteful number, since it uses less digits than its factorization.

384449391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378142 (or 378139 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 384449391 is about 19607.3810336822. The cubic root of 384449391 is about 727.1316674438.

It can be divided in two parts, 3844 and 49391, that added together give a palindrome (53235).

The spelling of 384449391 in words is "three hundred eighty-four million, four hundred forty-nine thousand, three hundred ninety-one".