388346129 has 2 divisors, whose sum is σ = 388346130. Its totient is φ = 388346128.

The previous prime is 388346107. The next prime is 388346141. The reversal of 388346129 is 921643883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371140225 + 17205904 = 19265^2 + 4148^2 .

It is an emirp because it is prime and its reverse (921643883) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388346129 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 388346129.

It is not a weakly prime, because it can be changed into another prime (388346429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194173064 + 194173065.

It is an arithmetic number, because the mean of its divisors is an integer number (194173065).

Almost surely, 2^388346129 is an apocalyptic number.

It is an amenable number.

388346129 is a deficient number, since it is larger than the sum of its proper divisors (1).

388346129 is an equidigital number, since it uses as much as digits as its factorization.

388346129 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 388346129 is about 19706.4996638165. The cubic root of 388346129 is about 729.5801232155.

The spelling of 388346129 in words is "three hundred eighty-eight million, three hundred forty-six thousand, one hundred twenty-nine".