478313839 has 2 divisors, whose sum is σ = 478313840. Its totient is φ = 478313838.

The previous prime is 478313821. The next prime is 478313879. The reversal of 478313839 is 938313874.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478313839 - 2¹¹ = 478311791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478313879) 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, 239156919 + 239156920.

It is an arithmetic number, because the mean of its divisors is an integer number (239156920).

Almost surely, 2^478313839 is an apocalyptic number.

478313839 is a deficient number, since it is larger than the sum of its proper divisors (1).

478313839 is an equidigital number, since it uses as much as digits as its factorization.

478313839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 478313839 is about 21870.3872622320. The cubic root of 478313839 is about 782.0556335422.

The spelling of 478313839 in words is "four hundred seventy-eight million, three hundred thirteen thousand, eight hundred thirty-nine".