394478 has 16 divisors (see below), whose sum is σ = 712320. Its totient is φ = 160056.

The previous prime is 394453. The next prime is 394481. The reversal of 394478 is 874493.

It is a super-2 number, since 2×394478² = 311225784968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476 + ... + 1007.

It is an arithmetic number, because the mean of its divisors is an integer number (44520).

2³⁹⁴⁴⁷⁸ is an apocalyptic number.

394478 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

394478 is a deficient number, since it is larger than the sum of its proper divisors (317842).

394478 is a wasteful number, since it uses less digits than its factorization.

394478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511.

The product of its digits is 24192, while the sum is 35.

The square root of 394478 is about 628.0748363054. The cubic root of 394478 is about 73.3400039846.

The spelling of 394478 in words is "three hundred ninety-four thousand, four hundred seventy-eight".