813478 has 4 divisors (see below), whose sum is σ = 1220220. Its totient is φ = 406738.

The previous prime is 813443. The next prime is 813493. The reversal of 813478 is 874318.

It is a happy number.

813478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874318 = 2 ⋅437159.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203368 + ... + 203371.

It is an arithmetic number, because the mean of its divisors is an integer number (305055).

2⁸¹³⁴⁷⁸ is an apocalyptic number.

813478 is a deficient number, since it is larger than the sum of its proper divisors (406742).

813478 is a wasteful number, since it uses less digits than its factorization.

813478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406741.

The product of its digits is 5376, while the sum is 31.

The square root of 813478 is about 901.9301525063. The cubic root of 813478 is about 93.3502038665.

The spelling of 813478 in words is "eight hundred thirteen thousand, four hundred seventy-eight".