388476089 has 2 divisors, whose sum is σ = 388476090. Its totient is φ = 388476088.

The previous prime is 388476043. The next prime is 388476091. The reversal of 388476089 is 980674883.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337824400 + 50651689 = 18380^2 + 7117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388476089 is a prime.

Together with 388476091, it forms a pair of twin primes.

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 388476089.

It is not a weakly prime, because it can be changed into another prime (388476029) 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, 194238044 + 194238045.

It is an arithmetic number, because the mean of its divisors is an integer number (194238045).

Almost surely, 2^388476089 is an apocalyptic number.

It is an amenable number.

388476089 is a deficient number, since it is larger than the sum of its proper divisors (1).

388476089 is an equidigital number, since it uses as much as digits as its factorization.

388476089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 388476089 is about 19709.7967772375. The cubic root of 388476089 is about 729.6614987814.

The spelling of 388476089 in words is "three hundred eighty-eight million, four hundred seventy-six thousand, eighty-nine".