394023 has 16 divisors (see below), whose sum is σ = 622080. Its totient is φ = 217056.

The previous prime is 394019. The next prime is 394039. The reversal of 394023 is 320493.

It is not a de Polignac number, because 394023 - 2² = 394019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286 + ... + 932.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2³⁹⁴⁰²³ is an apocalyptic number.

394023 is a deficient number, since it is larger than the sum of its proper divisors (228057).

394023 is a wasteful number, since it uses less digits than its factorization.

394023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 394023 is about 627.7125138150. The cubic root of 394023 is about 73.3117957872.

The spelling of 394023 in words is "three hundred ninety-four thousand, twenty-three".