478038331 has 2 divisors, whose sum is σ = 478038332. Its totient is φ = 478038330.

The previous prime is 478038307. The next prime is 478038403. The reversal of 478038331 is 133830874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478038331 - 2⁷ = 478038203 is a prime.

It is a super-2 number, since 2×478038331² = 457041291810531122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (478038031) 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, 239019165 + 239019166.

It is an arithmetic number, because the mean of its divisors is an integer number (239019166).

Almost surely, 2^478038331 is an apocalyptic number.

478038331 is a deficient number, since it is larger than the sum of its proper divisors (1).

478038331 is an equidigital number, since it uses as much as digits as its factorization.

478038331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 478038331 is about 21864.0877010682. The cubic root of 478038331 is about 781.9054504421.

The spelling of 478038331 in words is "four hundred seventy-eight million, thirty-eight thousand, three hundred thirty-one".