478688851 has 2 divisors, whose sum is σ = 478688852. Its totient is φ = 478688850.

The previous prime is 478688849. The next prime is 478688863. The reversal of 478688851 is 158886874.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478688851 - 2¹ = 478688849 is a prime.

Together with 478688849, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 478688792 and 478688801.

It is not a weakly prime, because it can be changed into another prime (478688801) 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 as a sum of consecutive naturals, namely, 239344425 + 239344426.

It is an arithmetic number, because the mean of its divisors is an integer number (239344426).

Almost surely, 2^478688851 is an apocalyptic number.

478688851 is a deficient number, since it is larger than the sum of its proper divisors (1).

478688851 is an equidigital number, since it uses as much as digits as its factorization.

478688851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3440640, while the sum is 55.

The square root of 478688851 is about 21878.9590931561. The cubic root of 478688851 is about 782.2599649594.

The spelling of 478688851 in words is "four hundred seventy-eight million, six hundred eighty-eight thousand, eight hundred fifty-one".