384741689 has 2 divisors, whose sum is σ = 384741690. Its totient is φ = 384741688.

The previous prime is 384741649. The next prime is 384741703. The reversal of 384741689 is 986147483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 360810025 + 23931664 = 18995^2 + 4892^2 .

It is a cyclic number.

It is not a de Polignac number, because 384741689 - 2²⁸ = 116306233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (384741649) 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, 192370844 + 192370845.

It is an arithmetic number, because the mean of its divisors is an integer number (192370845).

Almost surely, 2^384741689 is an apocalyptic number.

It is an amenable number.

384741689 is a deficient number, since it is larger than the sum of its proper divisors (1).

384741689 is an equidigital number, since it uses as much as digits as its factorization.

384741689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 384741689 is about 19614.8333921040. The cubic root of 384741689 is about 727.3159008740.

The spelling of 384741689 in words is "three hundred eighty-four million, seven hundred forty-one thousand, six hundred eighty-nine".