394144 has 24 divisors (see below), whose sum is σ = 790020. Its totient is φ = 193536.

The previous prime is 394129. The next prime is 394153. The reversal of 394144 is 441493.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 374544 + 19600 = 612^2 + 140^2 .

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 3432 + ... + 3544.

2³⁹⁴¹⁴⁴ is an apocalyptic number.

It is an amenable number.

394144 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

394144 is a wasteful number, since it uses less digits than its factorization.

394144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 224 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 394144 is about 627.8088881180. The cubic root of 394144 is about 73.3192994265.

The spelling of 394144 in words is "three hundred ninety-four thousand, one hundred forty-four".