384234689 has 2 divisors, whose sum is σ = 384234690. Its totient is φ = 384234688.

The previous prime is 384234679. The next prime is 384234707. The reversal of 384234689 is 986432483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375778225 + 8456464 = 19385^2 + 2908^2 .

It is a cyclic number.

It is not a de Polignac number, because 384234689 - 2¹⁶ = 384169153 is a prime.

It is not a weakly prime, because it can be changed into another prime (384234679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192117344 + 192117345.

It is an arithmetic number, because the mean of its divisors is an integer number (192117345).

Almost surely, 2^384234689 is an apocalyptic number.

It is an amenable number.

384234689 is a deficient number, since it is larger than the sum of its proper divisors (1).

384234689 is an equidigital number, since it uses as much as digits as its factorization.

384234689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 47.

The square root of 384234689 is about 19601.9052390323. The cubic root of 384234689 is about 726.9962827457.

The spelling of 384234689 in words is "three hundred eighty-four million, two hundred thirty-four thousand, six hundred eighty-nine".