398146 has 8 divisors (see below), whose sum is σ = 682560. Its totient is φ = 170628.

The previous prime is 398143. The next prime is 398149. The reversal of 398146 is 641893.

It is an interprime number because it is at equal distance from previous prime (398143) and next prime (398149).

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

It is not an unprimeable number, because it can be changed into a prime (398143) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 14206 + ... + 14233.

It is an arithmetic number, because the mean of its divisors is an integer number (85320).

2³⁹⁸¹⁴⁶ is an apocalyptic number.

398146 is a deficient number, since it is larger than the sum of its proper divisors (284414).

398146 is a wasteful number, since it uses less digits than its factorization.

398146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28448.

The product of its digits is 5184, while the sum is 31.

The square root of 398146 is about 630.9881139926. The cubic root of 398146 is about 73.5666170677.

The spelling of 398146 in words is "three hundred ninety-eight thousand, one hundred forty-six".