398396 has 12 divisors (see below), whose sum is σ = 703248. Its totient is φ = 197472.

The previous prime is 398393. The next prime is 398407. The reversal of 398396 is 693893.

It is a happy number.

398396 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 9.

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 398396.

It is not an unprimeable number, because it can be changed into a prime (398393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185 + ... + 911.

It is an arithmetic number, because the mean of its divisors is an integer number (58604).

2³⁹⁸³⁹⁶ is an apocalyptic number.

It is an amenable number.

398396 is a deficient number, since it is larger than the sum of its proper divisors (304852).

398396 is a wasteful number, since it uses less digits than its factorization.

398396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 866 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 398396 is about 631.1861848932. The cubic root of 398396 is about 73.5820115931.

The spelling of 398396 in words is "three hundred ninety-eight thousand, three hundred ninety-six".