388380029 has 2 divisors, whose sum is σ = 388380030. Its totient is φ = 388380028.

The previous prime is 388380017. The next prime is 388380049. The reversal of 388380029 is 920083883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387696100 + 683929 = 19690^2 + 827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388380029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388380049) 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, 194190014 + 194190015.

It is an arithmetic number, because the mean of its divisors is an integer number (194190015).

Almost surely, 2^388380029 is an apocalyptic number.

It is an amenable number.

388380029 is a deficient number, since it is larger than the sum of its proper divisors (1).

388380029 is an equidigital number, since it uses as much as digits as its factorization.

388380029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 388380029 is about 19707.3597673560. The cubic root of 388380029 is about 729.6013517405.

The spelling of 388380029 in words is "three hundred eighty-eight million, three hundred eighty thousand, twenty-nine".