398394 has 12 divisors (see below), whose sum is σ = 863226. Its totient is φ = 132792.

The previous prime is 398393. The next prime is 398407. The reversal of 398394 is 493893.

It can be written as a sum of positive squares in only one way, i.e., 342225 + 56169 = 585^2 + 237^2 .

It is a nialpdrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398394.

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 5 ways as a sum of consecutive naturals, for example, 11049 + ... + 11084.

2³⁹⁸³⁹⁴ is an apocalyptic number.

398394 is an abundant number, since it is smaller than the sum of its proper divisors (464832).

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

398394 is a wasteful number, since it uses less digits than its factorization.

398394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22141 (or 22138 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 398394 is about 631.1846005726. The cubic root of 398394 is about 73.5818884625.

The spelling of 398394 in words is "three hundred ninety-eight thousand, three hundred ninety-four".