384281369 has 2 divisors, whose sum is σ = 384281370. Its totient is φ = 384281368.

The previous prime is 384281357. The next prime is 384281393. The reversal of 384281369 is 963182483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276889600 + 107391769 = 16640^2 + 10363^2 .

It is a cyclic number.

It is not a de Polignac number, because 384281369 - 2¹² = 384277273 is a prime.

It is a super-2 number, since 2×384281369² = 295344341121028322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (384281329) 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, 192140684 + 192140685.

It is an arithmetic number, because the mean of its divisors is an integer number (192140685).

Almost surely, 2^384281369 is an apocalyptic number.

It is an amenable number.

384281369 is a deficient number, since it is larger than the sum of its proper divisors (1).

384281369 is an equidigital number, since it uses as much as digits as its factorization.

384281369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 44.

The square root of 384281369 is about 19603.0959034536. The cubic root of 384281369 is about 727.0257220556.

The spelling of 384281369 in words is "three hundred eighty-four million, two hundred eighty-one thousand, three hundred sixty-nine".