818394 has 8 divisors (see below), whose sum is σ = 1636800. Its totient is φ = 272796.

The previous prime is 818393. The next prime is 818399. The reversal of 818394 is 493818.

It is a sphenic number, since it is the product of 3 distinct primes.

818394 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (818393) 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, 68194 + ... + 68205.

It is an arithmetic number, because the mean of its divisors is an integer number (204600).

2⁸¹⁸³⁹⁴ is an apocalyptic number.

818394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

818394 is a wasteful number, since it uses less digits than its factorization.

818394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136404.

The product of its digits is 6912, while the sum is 33.

The square root of 818394 is about 904.6513140432. The cubic root of 818394 is about 93.5378705962.

The spelling of 818394 in words is "eight hundred eighteen thousand, three hundred ninety-four".