384666481 has 2 divisors, whose sum is σ = 384666482. Its totient is φ = 384666480.

The previous prime is 384666461. The next prime is 384666487. The reversal of 384666481 is 184666483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252301456 + 132365025 = 15884^2 + 11505^2 .

It is a cyclic number.

It is not a de Polignac number, because 384666481 - 2⁹ = 384665969 is a prime.

It is a super-2 number, since 2×384666481² = 295936603209846722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (384666487) 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, 192333240 + 192333241.

It is an arithmetic number, because the mean of its divisors is an integer number (192333241).

Almost surely, 2^384666481 is an apocalyptic number.

It is an amenable number.

384666481 is a deficient number, since it is larger than the sum of its proper divisors (1).

384666481 is an equidigital number, since it uses as much as digits as its factorization.

384666481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 46.

The square root of 384666481 is about 19612.9161778661. The cubic root of 384666481 is about 727.2685067042.

The spelling of 384666481 in words is "three hundred eighty-four million, six hundred sixty-six thousand, four hundred eighty-one".