477823 has 2 divisors, whose sum is σ = 477824. Its totient is φ = 477822.

The previous prime is 477821. The next prime is 477839. The reversal of 477823 is 328774.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 477823 - 2¹ = 477821 is a prime.

Together with 477821, it forms a pair of twin primes.

477823 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477821) 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, 238911 + 238912.

It is an arithmetic number, because the mean of its divisors is an integer number (238912).

2⁴⁷⁷⁸²³ is an apocalyptic number.

477823 is a deficient number, since it is larger than the sum of its proper divisors (1).

477823 is an equidigital number, since it uses as much as digits as its factorization.

477823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 31.

The square root of 477823 is about 691.2474231417. The cubic root of 477823 is about 78.1788030451.

The spelling of 477823 in words is "four hundred seventy-seven thousand, eight hundred twenty-three".