394624 has 16 divisors (see below), whose sum is σ = 786420. Its totient is φ = 197248.

The previous prime is 394619. The next prime is 394631. The reversal of 394624 is 426493.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 3³ + 9² + 6⁴ + 4 + 2¹⁷ + 4⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 394592 and 394601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1414 + ... + 1669.

2³⁹⁴⁶²⁴ is an apocalyptic number.

It is an amenable number.

394624 is a deficient number, since it is larger than the sum of its proper divisors (391796).

394624 is an equidigital number, since it uses as much as digits as its factorization.

394624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097 (or 3085 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 394624 is about 628.1910537408. The cubic root of 394624 is about 73.3490508092.

The spelling of 394624 in words is "three hundred ninety-four thousand, six hundred twenty-four".