478281823 has 4 divisors (see below), whose sum is σ = 488458080. Its totient is φ = 468105568.

The previous prime is 478281787. The next prime is 478281827. The reversal of 478281823 is 328182874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478281823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478281823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478281827) 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, 5088058 + ... + 5088151.

It is an arithmetic number, because the mean of its divisors is an integer number (122114520).

Almost surely, 2^478281823 is an apocalyptic number.

478281823 is a deficient number, since it is larger than the sum of its proper divisors (10176257).

478281823 is a wasteful number, since it uses less digits than its factorization.

478281823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176256.

The product of its digits is 172032, while the sum is 43.

The square root of 478281823 is about 21869.6553013531. The cubic root of 478281823 is about 782.0381841538.

The spelling of 478281823 in words is "four hundred seventy-eight million, two hundred eighty-one thousand, eight hundred twenty-three".