478884099989 has 2 divisors, whose sum is σ = 478884099990. Its totient is φ = 478884099988.

The previous prime is 478884099971. The next prime is 478884100039. The reversal of 478884099989 is 989990488874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389463364900 + 89420735089 = 624070^2 + 299033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478884099989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478884090989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239442049994 + 239442049995.

It is an arithmetic number, because the mean of its divisors is an integer number (239442049995).

Almost surely, 2^478884099989 is an apocalyptic number.

It is an amenable number.

478884099989 is a deficient number, since it is larger than the sum of its proper divisors (1).

478884099989 is an equidigital number, since it uses as much as digits as its factorization.

478884099989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3009871872, while the sum is 83.

The spelling of 478884099989 in words is "four hundred seventy-eight billion, eight hundred eighty-four million, ninety-nine thousand, nine hundred eighty-nine".