478347827 has 4 divisors (see below), whose sum is σ = 479186136. Its totient is φ = 477509520.

The previous prime is 478347823. The next prime is 478347833. The reversal of 478347827 is 728743874.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 478347827 - 2² = 478347823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478347823) 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, 418298 + ... + 419439.

It is an arithmetic number, because the mean of its divisors is an integer number (119796534).

Almost surely, 2^478347827 is an apocalyptic number.

478347827 is a deficient number, since it is larger than the sum of its proper divisors (838309).

478347827 is an equidigital number, since it uses as much as digits as its factorization.

478347827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838308.

The product of its digits is 2107392, while the sum is 50.

The square root of 478347827 is about 21871.1642808516. The cubic root of 478347827 is about 782.0741568597.

The spelling of 478347827 in words is "four hundred seventy-eight million, three hundred forty-seven thousand, eight hundred twenty-seven".