478471823 has 2 divisors, whose sum is σ = 478471824. Its totient is φ = 478471822.

The previous prime is 478471811. The next prime is 478471831. The reversal of 478471823 is 328174874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478471823 - 2⁶ = 478471759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478471853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239235911 + 239235912.

It is an arithmetic number, because the mean of its divisors is an integer number (239235912).

Almost surely, 2^478471823 is an apocalyptic number.

478471823 is a deficient number, since it is larger than the sum of its proper divisors (1).

478471823 is an equidigital number, since it uses as much as digits as its factorization.

478471823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 44.

The square root of 478471823 is about 21873.9987885160. The cubic root of 478471823 is about 782.1417267212.

The spelling of 478471823 in words is "four hundred seventy-eight million, four hundred seventy-one thousand, eight hundred twenty-three".