398198 has 8 divisors (see below), whose sum is σ = 603408. Its totient is φ = 197064.

The previous prime is 398171. The next prime is 398207. The reversal of 398198 is 891893.

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

It is a congruent number.

It is an unprimeable number.

398198 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, 761 + ... + 1172.

It is an arithmetic number, because the mean of its divisors is an integer number (75426).

2³⁹⁸¹⁹⁸ is an apocalyptic number.

398198 is a deficient number, since it is larger than the sum of its proper divisors (205210).

398198 is a wasteful number, since it uses less digits than its factorization.

398198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038.

The product of its digits is 15552, while the sum is 38.

The square root of 398198 is about 631.0293178609. The cubic root of 398198 is about 73.5698196597.

The spelling of 398198 in words is "three hundred ninety-eight thousand, one hundred ninety-eight".