394006 has 4 divisors (see below), whose sum is σ = 591012. Its totient is φ = 197002.

The previous prime is 393997. The next prime is 394007. The reversal of 394006 is 600493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 600493 = 491 ⋅1223.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394007) by changing a digit.

394006 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98500 + ... + 98503.

It is an arithmetic number, because the mean of its divisors is an integer number (147753).

2³⁹⁴⁰⁰⁶ is an apocalyptic number.

394006 is a deficient number, since it is larger than the sum of its proper divisors (197006).

394006 is a wasteful number, since it uses less digits than its factorization.

394006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197005.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 394006 is about 627.6989724382. The cubic root of 394006 is about 73.3107414338.

Adding to 394006 its reverse (600493), we get a palindrome (994499).

The spelling of 394006 in words is "three hundred ninety-four thousand, six".