388747069 has 2 divisors, whose sum is σ = 388747070. Its totient is φ = 388747068.

The previous prime is 388747067. The next prime is 388747129. The reversal of 388747069 is 960747883.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257987844 + 130759225 = 16062^2 + 11435^2 .

It is a cyclic number.

It is not a de Polignac number, because 388747069 - 2¹ = 388747067 is a prime.

It is a super-2 number, since 2×388747069² = 302248567312181522, which contains 22 as substring.

Together with 388747067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388747067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194373534 + 194373535.

It is an arithmetic number, because the mean of its divisors is an integer number (194373535).

Almost surely, 2^388747069 is an apocalyptic number.

It is an amenable number.

388747069 is a deficient number, since it is larger than the sum of its proper divisors (1).

388747069 is an equidigital number, since it uses as much as digits as its factorization.

388747069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 388747069 is about 19716.6698253026. The cubic root of 388747069 is about 729.8311168717.

The spelling of 388747069 in words is "three hundred eighty-eight million, seven hundred forty-seven thousand, sixty-nine".