478890073 has 2 divisors, whose sum is σ = 478890074. Its totient is φ = 478890072.

The previous prime is 478890059. The next prime is 478890133. The reversal of 478890073 is 370098874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344028304 + 134861769 = 18548^2 + 11613^2 .

It is a cyclic number.

It is not a de Polignac number, because 478890073 - 2⁹ = 478889561 is a prime.

It is not a weakly prime, because it can be changed into another prime (478890673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239445036 + 239445037.

It is an arithmetic number, because the mean of its divisors is an integer number (239445037).

Almost surely, 2^478890073 is an apocalyptic number.

It is an amenable number.

478890073 is a deficient number, since it is larger than the sum of its proper divisors (1).

478890073 is an equidigital number, since it uses as much as digits as its factorization.

478890073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 478890073 is about 21883.5571377233. The cubic root of 478890073 is about 782.3695600638.

The spelling of 478890073 in words is "four hundred seventy-eight million, eight hundred ninety thousand, seventy-three".