813422 has 8 divisors (see below), whose sum is σ = 1224936. Its totient is φ = 405112.

The previous prime is 813419. The next prime is 813427. The reversal of 813422 is 224318.

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

It is a junction number, because it is equal to n+sod(n) for n = 813394 and 813403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (153117).

2⁸¹³⁴²² is an apocalyptic number.

813422 is a deficient number, since it is larger than the sum of its proper divisors (411514).

813422 is a wasteful number, since it uses less digits than its factorization.

813422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602.

The product of its digits is 384, while the sum is 20.

The square root of 813422 is about 901.8991074394. The cubic root of 813422 is about 93.3480617346.

The spelling of 813422 in words is "eight hundred thirteen thousand, four hundred twenty-two".