398164 has 36 divisors (see below), whose sum is σ = 819840. Its totient is φ = 168480.

The previous prime is 398149. The next prime is 398171. The reversal of 398164 is 461893.

398164 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

398164 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 11 ways as a sum of consecutive naturals, for example, 12829 + ... + 12859.

2³⁹⁸¹⁶⁴ is an apocalyptic number.

It is an amenable number.

398164 is an abundant number, since it is smaller than the sum of its proper divisors (421676).

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

398164 is a wasteful number, since it uses less digits than its factorization.

398164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 65 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 398164 is about 631.0023771746. The cubic root of 398164 is about 73.5677256888.

It can be divided in two parts, 3 and 98164, that multiplied together give a palindrome (294492).

The spelling of 398164 in words is "three hundred ninety-eight thousand, one hundred sixty-four".