405198 has 12 divisors (see below), whose sum is σ = 877968. Its totient is φ = 135060.

The previous prime is 405179. The next prime is 405199. The reversal of 405198 is 891504.

405198 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11238 + ... + 11273.

It is an arithmetic number, because the mean of its divisors is an integer number (73164).

2⁴⁰⁵¹⁹⁸ is an apocalyptic number.

405198 is an abundant number, since it is smaller than the sum of its proper divisors (472770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405198 is a wasteful number, since it uses less digits than its factorization.

405198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22519 (or 22516 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 405198 is about 636.5516475511. The cubic root of 405198 is about 73.9984173024.

The spelling of 405198 in words is "four hundred five thousand, one hundred ninety-eight".