384644 has 18 divisors (see below), whose sum is σ = 730170. Its totient is φ = 177216.

The previous prime is 384641. The next prime is 384673. The reversal of 384644 is 446483.

It can be written as a sum of positive squares in 3 ways, for example, as 12544 + 372100 = 112^2 + 610^2 .

It is not an unprimeable number, because it can be changed into a prime (384641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392 + ... + 960.

It is an arithmetic number, because the mean of its divisors is an integer number (40565).

2³⁸⁴⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

384644 is a deficient number, since it is larger than the sum of its proper divisors (345526).

384644 is a wasteful number, since it uses less digits than its factorization.

384644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 584 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 384644 is about 620.1967429776. The cubic root of 384644 is about 72.7254338550.

The spelling of 384644 in words is "three hundred eighty-four thousand, six hundred forty-four".