813394 has 4 divisors (see below), whose sum is σ = 1220094. Its totient is φ = 406696.

The previous prime is 813383. The next prime is 813401. The reversal of 813394 is 493318.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 731025 + 82369 = 855^2 + 287^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203347 + ... + 203350.

2⁸¹³³⁹⁴ is an apocalyptic number.

813394 is a deficient number, since it is larger than the sum of its proper divisors (406700).

813394 is a wasteful number, since it uses less digits than its factorization.

813394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406699.

The product of its digits is 2592, while the sum is 28.

The square root of 813394 is about 901.8835845052. The cubic root of 813394 is about 93.3469906318.

The spelling of 813394 in words is "eight hundred thirteen thousand, three hundred ninety-four".