394189 has 4 divisors (see below), whose sum is σ = 402624. Its totient is φ = 385756.

The previous prime is 394187. The next prime is 394201. The reversal of 394189 is 981493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 394189 - 2¹ = 394187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394187) 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, 4147 + ... + 4240.

It is an arithmetic number, because the mean of its divisors is an integer number (100656).

2³⁹⁴¹⁸⁹ is an apocalyptic number.

It is an amenable number.

394189 is a deficient number, since it is larger than the sum of its proper divisors (8435).

394189 is an equidigital number, since it uses as much as digits as its factorization.

394189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8434.

The product of its digits is 7776, while the sum is 34.

The square root of 394189 is about 627.8447260271. The cubic root of 394189 is about 73.3220896444.

The spelling of 394189 in words is "three hundred ninety-four thousand, one hundred eighty-nine".