409198 has 4 divisors (see below), whose sum is σ = 613800. Its totient is φ = 204598.

The previous prime is 409187. The next prime is 409217. The reversal of 409198 is 891904.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102298 + ... + 102301.

It is an arithmetic number, because the mean of its divisors is an integer number (153450).

2⁴⁰⁹¹⁹⁸ is an apocalyptic number.

409198 is a deficient number, since it is larger than the sum of its proper divisors (204602).

409198 is a wasteful number, since it uses less digits than its factorization.

409198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204601.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 409198 is about 639.6858604034. The cubic root of 409198 is about 74.2411175686.

The spelling of 409198 in words is "four hundred nine thousand, one hundred ninety-eight".