394424 has 16 divisors (see below), whose sum is σ = 756000. Its totient is φ = 192832.

The previous prime is 394411. The next prime is 394453. The reversal of 394424 is 424493.

It is an Ulam number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 394393 and 394402.

It is a congruent number.

It is an unprimeable number.

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, 149 + ... + 900.

It is an arithmetic number, because the mean of its divisors is an integer number (47250).

2³⁹⁴⁴²⁴ is an apocalyptic number.

It is an amenable number.

394424 is a deficient number, since it is larger than the sum of its proper divisors (361576).

394424 is a wasteful number, since it uses less digits than its factorization.

394424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102 (or 1098 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 394424 is about 628.0318463263. The cubic root of 394424 is about 73.3366573333.

It can be divided in two parts, 394 and 424, that added together give a palindrome (818).

The spelling of 394424 in words is "three hundred ninety-four thousand, four hundred twenty-four".