477839 has 2 divisors, whose sum is σ = 477840. Its totient is φ = 477838.

The previous prime is 477823. The next prime is 477847. The reversal of 477839 is 938774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 477839 - 2⁴ = 477823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477809) 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 as a sum of consecutive naturals, namely, 238919 + 238920.

It is an arithmetic number, because the mean of its divisors is an integer number (238920).

2⁴⁷⁷⁸³⁹ is an apocalyptic number.

477839 is a deficient number, since it is larger than the sum of its proper divisors (1).

477839 is an equidigital number, since it uses as much as digits as its factorization.

477839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 477839 is about 691.2589963248. The cubic root of 477839 is about 78.1796756464.

The spelling of 477839 in words is "four hundred seventy-seven thousand, eight hundred thirty-nine".