394423 has 4 divisors (see below), whose sum is σ = 397440. Its totient is φ = 391408.

The previous prime is 394411. The next prime is 394453. The reversal of 394423 is 324493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394423 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 9³ + 4⁴ + 4⁸ + 2¹⁷ + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303 + ... + 1576.

It is an arithmetic number, because the mean of its divisors is an integer number (99360).

2³⁹⁴⁴²³ is an apocalyptic number.

394423 is a deficient number, since it is larger than the sum of its proper divisors (3017).

394423 is a wasteful number, since it uses less digits than its factorization.

394423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016.

The product of its digits is 2592, while the sum is 25.

The square root of 394423 is about 628.0310501878. The cubic root of 394423 is about 73.3365953554.

The spelling of 394423 in words is "three hundred ninety-four thousand, four hundred twenty-three".