478901399189 has 2 divisors, whose sum is σ = 478901399190. Its totient is φ = 478901399188.

The previous prime is 478901399117. The next prime is 478901399191. The reversal of 478901399189 is 981993109874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255156316900 + 223745082289 = 505130^2 + 473017^2 .

It is a cyclic number.

It is not a de Polignac number, because 478901399189 - 2²⁸ = 478632963733 is a prime.

It is a super-3 number, since 3×478901399189³ (a number of 36 digits) contains 333 as substring.

Together with 478901399191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478901399989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239450699594 + 239450699595.

It is an arithmetic number, because the mean of its divisors is an integer number (239450699595).

Almost surely, 2^478901399189 is an apocalyptic number.

It is an amenable number.

478901399189 is a deficient number, since it is larger than the sum of its proper divisors (1).

478901399189 is an equidigital number, since it uses as much as digits as its factorization.

478901399189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35271936, while the sum is 68.

The spelling of 478901399189 in words is "four hundred seventy-eight billion, nine hundred one million, three hundred ninety-nine thousand, one hundred eighty-nine".