814823 has 2 divisors, whose sum is σ = 814824. Its totient is φ = 814822.

The previous prime is 814799. The next prime is 814829. The reversal of 814823 is 328418.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-814823 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 814792 and 814801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407411 + 407412.

It is an arithmetic number, because the mean of its divisors is an integer number (407412).

2⁸¹⁴⁸²³ is an apocalyptic number.

814823 is a deficient number, since it is larger than the sum of its proper divisors (1).

814823 is an equidigital number, since it uses as much as digits as its factorization.

814823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 26.

The square root of 814823 is about 902.6754677070. The cubic root of 814823 is about 93.4016237737.

The spelling of 814823 in words is "eight hundred fourteen thousand, eight hundred twenty-three".