812793 has 4 divisors (see below), whose sum is σ = 1083728. Its totient is φ = 541860.

The previous prime is 812761. The next prime is 812807. The reversal of 812793 is 397218.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 812793 - 2⁵ = 812761 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 812793.

It is not an unprimeable number, because it can be changed into a prime (812393) 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, 135463 + ... + 135468.

It is an arithmetic number, because the mean of its divisors is an integer number (270932).

2⁸¹²⁷⁹³ is an apocalyptic number.

It is an amenable number.

812793 is a deficient number, since it is larger than the sum of its proper divisors (270935).

812793 is a wasteful number, since it uses less digits than its factorization.

812793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270934.

The product of its digits is 3024, while the sum is 30.

The square root of 812793 is about 901.5503313737. The cubic root of 812793 is about 93.3239942470.

The spelling of 812793 in words is "eight hundred twelve thousand, seven hundred ninety-three".