384681444 has 24 divisors (see below), whose sum is σ = 1025817408. Its totient is φ = 109908960.

The previous prime is 384681439. The next prime is 384681481. The reversal of 384681444 is 444186483.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 384681396 and 384681405.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2289687 + ... + 2289854.

It is an arithmetic number, because the mean of its divisors is an integer number (42742392).

Almost surely, 2^384681444 is an apocalyptic number.

It is an amenable number.

384681444 is an abundant number, since it is smaller than the sum of its proper divisors (641135964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

384681444 is a wasteful number, since it uses less digits than its factorization.

384681444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579555 (or 4579553 counting only the distinct ones).

The product of its digits is 294912, while the sum is 42.

The square root of 384681444 is about 19613.2976319639. The cubic root of 384681444 is about 727.2779364987.

The spelling of 384681444 in words is "three hundred eighty-four million, six hundred eighty-one thousand, four hundred forty-four".