394243 has 8 divisors (see below), whose sum is σ = 419616. Its totient is φ = 369600.

The previous prime is 394241. The next prime is 394249. The reversal of 394243 is 342493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 394243 - 2¹ = 394241 is a prime.

It is a Duffinian number.

394243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (394241) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1263 + ... + 1543.

It is an arithmetic number, because the mean of its divisors is an integer number (52452).

2³⁹⁴²⁴³ is an apocalyptic number.

394243 is a deficient number, since it is larger than the sum of its proper divisors (25373).

394243 is a wasteful number, since it uses less digits than its factorization.

394243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

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

The square root of 394243 is about 627.8877288178. The cubic root of 394243 is about 73.3254376256.

The spelling of 394243 in words is "three hundred ninety-four thousand, two hundred forty-three".