394656 has 24 divisors (see below), whose sum is σ = 1036224. Its totient is φ = 131520.

The previous prime is 394643. The next prime is 394673. The reversal of 394656 is 656493.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1960 + ... + 2151.

It is an arithmetic number, because the mean of its divisors is an integer number (43176).

394656 is a Friedman number, since it can be written as 96*(4^6+5*3), using all its digits and the basic arithmetic operations.

2³⁹⁴⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

394656 is an abundant number, since it is smaller than the sum of its proper divisors (641568).

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

394656 is a wasteful number, since it uses less digits than its factorization.

394656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124 (or 4116 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 394656 is about 628.2165231829. The cubic root of 394656 is about 73.3510333767.

The spelling of 394656 in words is "three hundred ninety-four thousand, six hundred fifty-six".