398006 has 8 divisors (see below), whose sum is σ = 682320. Its totient is φ = 170568.

The previous prime is 397981. The next prime is 398011. The reversal of 398006 is 600893.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

398006 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14201 + ... + 14228.

It is an arithmetic number, because the mean of its divisors is an integer number (85290).

2³⁹⁸⁰⁰⁶ is an apocalyptic number.

398006 is a deficient number, since it is larger than the sum of its proper divisors (284314).

398006 is a wasteful number, since it uses less digits than its factorization.

398006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28438.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 398006 is about 630.8771671253. The cubic root of 398006 is about 73.5579933185.

Adding to 398006 its reverse (600893), we get a palindrome (998899).

The spelling of 398006 in words is "three hundred ninety-eight thousand, six".