398196 has 30 divisors (see below), whose sum is σ = 1041810. Its totient is φ = 132624.

The previous prime is 398171. The next prime is 398207. The reversal of 398196 is 691893.

It can be written as a sum of positive squares in only one way, i.e., 396900 + 1296 = 630^2 + 36^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 398196.

It is a congruent number.

It is an unprimeable number.

398196 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 9 ways as a sum of consecutive naturals, for example, 291 + ... + 938.

It is an arithmetic number, because the mean of its divisors is an integer number (34727).

2³⁹⁸¹⁹⁶ is an apocalyptic number.

398196 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

398196 is an abundant number, since it is smaller than the sum of its proper divisors (643614).

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

398196 is a wasteful number, since it uses less digits than its factorization.

398196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1234 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 398196 is about 631.0277331465. The cubic root of 398196 is about 73.5696964882.

The spelling of 398196 in words is "three hundred ninety-eight thousand, one hundred ninety-six".