394644 has 12 divisors (see below), whose sum is σ = 920864. Its totient is φ = 131544.

The previous prime is 394643. The next prime is 394673. The reversal of 394644 is 446493.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16432 + ... + 16455.

2³⁹⁴⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

394644 is an abundant number, since it is smaller than the sum of its proper divisors (526220).

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

394644 is a wasteful number, since it uses less digits than its factorization.

394644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32894 (or 32892 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 394644 is about 628.2069722631. The cubic root of 394644 is about 73.3502899265.

The spelling of 394644 in words is "three hundred ninety-four thousand, six hundred forty-four".