812941 has 4 divisors (see below), whose sum is σ = 814752. Its totient is φ = 811132.

The previous prime is 812939. The next prime is 812963. The reversal of 812941 is 149218.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 149218 = 2 ⋅74609.

It is a cyclic number.

It is not a de Polignac number, because 812941 - 2¹ = 812939 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812921) 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, 336 + ... + 1318.

It is an arithmetic number, because the mean of its divisors is an integer number (203688).

2⁸¹²⁹⁴¹ is an apocalyptic number.

It is an amenable number.

812941 is a deficient number, since it is larger than the sum of its proper divisors (1811).

812941 is an equidigital number, since it uses as much as digits as its factorization.

812941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810.

The product of its digits is 576, while the sum is 25.

The square root of 812941 is about 901.6324084681. The cubic root of 812941 is about 93.3296583020.

The spelling of 812941 in words is "eight hundred twelve thousand, nine hundred forty-one".