478162889 has 2 divisors, whose sum is σ = 478162890. Its totient is φ = 478162888.

The previous prime is 478162871. The next prime is 478162891. The reversal of 478162889 is 988261874.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346257664 + 131905225 = 18608^2 + 11485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478162889 is a prime.

Together with 478162891, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478162889.

It is not a weakly prime, because it can be changed into another prime (478162849) 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, 239081444 + 239081445.

It is an arithmetic number, because the mean of its divisors is an integer number (239081445).

Almost surely, 2^478162889 is an apocalyptic number.

It is an amenable number.

478162889 is a deficient number, since it is larger than the sum of its proper divisors (1).

478162889 is an equidigital number, since it uses as much as digits as its factorization.

478162889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 53.

The square root of 478162889 is about 21866.9359764920. The cubic root of 478162889 is about 781.9733558206.

It can be divided in two parts, 47816 and 2889, that added together give a palindrome (50705).

The spelling of 478162889 in words is "four hundred seventy-eight million, one hundred sixty-two thousand, eight hundred eighty-nine".