478421222329 has 2 divisors, whose sum is σ = 478421222330. Its totient is φ = 478421222328.

The previous prime is 478421222303. The next prime is 478421222519. The reversal of 478421222329 is 923222124874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287133079104 + 191288143225 = 535848^2 + 437365^2 .

It is a cyclic number.

It is not a de Polignac number, because 478421222329 - 2³⁵ = 444061483961 is a prime.

It is not a weakly prime, because it can be changed into another prime (478421222029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239210611164 + 239210611165.

It is an arithmetic number, because the mean of its divisors is an integer number (239210611165).

Almost surely, 2^478421222329 is an apocalyptic number.

It is an amenable number.

478421222329 is a deficient number, since it is larger than the sum of its proper divisors (1).

478421222329 is an equidigital number, since it uses as much as digits as its factorization.

478421222329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 46.

The spelling of 478421222329 in words is "four hundred seventy-eight billion, four hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-nine".