389131129 has 2 divisors, whose sum is σ = 389131130. Its totient is φ = 389131128.

The previous prime is 389131121. The next prime is 389131133. The reversal of 389131129 is 921131983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322741225 + 66389904 = 17965^2 + 8148^2 .

It is a cyclic number.

It is not a de Polignac number, because 389131129 - 2³ = 389131121 is a prime.

It is not a weakly prime, because it can be changed into another prime (389131121) 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, 194565564 + 194565565.

It is an arithmetic number, because the mean of its divisors is an integer number (194565565).

Almost surely, 2^389131129 is an apocalyptic number.

It is an amenable number.

389131129 is a deficient number, since it is larger than the sum of its proper divisors (1).

389131129 is an equidigital number, since it uses as much as digits as its factorization.

389131129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 389131129 is about 19726.4068953269. The cubic root of 389131129 is about 730.0713816481.

The spelling of 389131129 in words is "three hundred eighty-nine million, one hundred thirty-one thousand, one hundred twenty-nine".