398118 has 16 divisors (see below), whose sum is σ = 910080. Its totient is φ = 113736.

The previous prime is 398117. The next prime is 398119. The reversal of 398118 is 811893.

It is an interprime number because it is at equal distance from previous prime (398117) and next prime (398119).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398118.

It is not an unprimeable number, because it can be changed into a prime (398113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4698 + ... + 4781.

It is an arithmetic number, because the mean of its divisors is an integer number (56880).

2³⁹⁸¹¹⁸ is an apocalyptic number.

398118 is an abundant number, since it is smaller than the sum of its proper divisors (511962).

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

398118 is a wasteful number, since it uses less digits than its factorization.

398118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491.

The product of its digits is 1728, while the sum is 30.

The square root of 398118 is about 630.9659261799. The cubic root of 398118 is about 73.5648924796.

It can be divided in two parts, 398 and 118, that multiplied together give a palindrome (46964).

The spelling of 398118 in words is "three hundred ninety-eight thousand, one hundred eighteen".