478134439 has 2 divisors, whose sum is σ = 478134440. Its totient is φ = 478134438.

The previous prime is 478134427. The next prime is 478134457. The reversal of 478134439 is 934431874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478134439 - 2⁹ = 478133927 is a prime.

It is a super-3 number, since 3×478134439³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 478134395 and 478134404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478134479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239067219 + 239067220.

It is an arithmetic number, because the mean of its divisors is an integer number (239067220).

Almost surely, 2^478134439 is an apocalyptic number.

478134439 is a deficient number, since it is larger than the sum of its proper divisors (1).

478134439 is an equidigital number, since it uses as much as digits as its factorization.

478134439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 478134439 is about 21866.2854412907. The cubic root of 478134439 is about 781.9578467520.

The spelling of 478134439 in words is "four hundred seventy-eight million, one hundred thirty-four thousand, four hundred thirty-nine".