388004387 has 2 divisors, whose sum is σ = 388004388. Its totient is φ = 388004386.

The previous prime is 388004329. The next prime is 388004389. The reversal of 388004387 is 783400883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 388004387 - 2¹⁶ = 387938851 is a prime.

Together with 388004389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (388004389) 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, 194002193 + 194002194.

It is an arithmetic number, because the mean of its divisors is an integer number (194002194).

Almost surely, 2^388004387 is an apocalyptic number.

388004387 is a deficient number, since it is larger than the sum of its proper divisors (1).

388004387 is an equidigital number, since it uses as much as digits as its factorization.

388004387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 388004387 is about 19697.8269613681. The cubic root of 388004387 is about 729.3660518641.

The spelling of 388004387 in words is "three hundred eighty-eight million, four thousand, three hundred eighty-seven".