384646 has 4 divisors (see below), whose sum is σ = 576972. Its totient is φ = 192322.

The previous prime is 384641. The next prime is 384673. The reversal of 384646 is 646483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646483 = 67 ⋅9649.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96160 + ... + 96163.

It is an arithmetic number, because the mean of its divisors is an integer number (144243).

2³⁸⁴⁶⁴⁶ is an apocalyptic number.

384646 is a deficient number, since it is larger than the sum of its proper divisors (192326).

384646 is a wasteful number, since it uses less digits than its factorization.

384646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192325.

The product of its digits is 13824, while the sum is 31.

The square root of 384646 is about 620.1983553671. The cubic root of 384646 is about 72.7255599028.

The spelling of 384646 in words is "three hundred eighty-four thousand, six hundred forty-six".