813396 has 12 divisors (see below), whose sum is σ = 1897952. Its totient is φ = 271128.

The previous prime is 813383. The next prime is 813401. The reversal of 813396 is 693318.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×813396² = 1323226105632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33880 + ... + 33903.

2⁸¹³³⁹⁶ is an apocalyptic number.

It is an amenable number.

813396 is an abundant number, since it is smaller than the sum of its proper divisors (1084556).

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

813396 is a wasteful number, since it uses less digits than its factorization.

813396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67790 (or 67788 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 813396 is about 901.8846932951. The cubic root of 813396 is about 93.3470671400.

The spelling of 813396 in words is "eight hundred thirteen thousand, three hundred ninety-six".