478723841 has 4 divisors (see below), whose sum is σ = 479866800. Its totient is φ = 477580884.

The previous prime is 478723837. The next prime is 478723849. The reversal of 478723841 is 148327874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478723841 - 2² = 478723837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478723792 and 478723801.

It is not an unprimeable number, because it can be changed into a prime (478723849) 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 in 3 ways as a sum of consecutive naturals, for example, 570851 + ... + 571688.

It is an arithmetic number, because the mean of its divisors is an integer number (119966700).

Almost surely, 2^478723841 is an apocalyptic number.

It is an amenable number.

478723841 is a deficient number, since it is larger than the sum of its proper divisors (1142959).

478723841 is a wasteful number, since it uses less digits than its factorization.

478723841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142958.

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

The square root of 478723841 is about 21879.7587052508. The cubic root of 478723841 is about 782.2790243890.

The spelling of 478723841 in words is "four hundred seventy-eight million, seven hundred twenty-three thousand, eight hundred forty-one".