384144644 has 24 divisors (see below), whose sum is σ = 725621400. Its totient is φ = 176891904.

The previous prime is 384144637. The next prime is 384144727. The reversal of 384144644 is 446441483.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 90022144 + 294122500 = 9488^2 + 17150^2 .

It is a junction number, because it is equal to n+sod(n) for n = 384144598 and 384144607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15122 + ... + 31574.

It is an arithmetic number, because the mean of its divisors is an integer number (30234225).

Almost surely, 2^384144644 is an apocalyptic number.

It is an amenable number.

384144644 is a deficient number, since it is larger than the sum of its proper divisors (341476756).

384144644 is a wasteful number, since it uses less digits than its factorization.

384144644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16919 (or 16917 counting only the distinct ones).

The product of its digits is 147456, while the sum is 38.

The square root of 384144644 is about 19599.6082613913. The cubic root of 384144644 is about 726.9394880344.

The spelling of 384144644 in words is "three hundred eighty-four million, one hundred forty-four thousand, six hundred forty-four".