388808219 has 2 divisors, whose sum is σ = 388808220. Its totient is φ = 388808218.

The previous prime is 388808209. The next prime is 388808237. The reversal of 388808219 is 912808883.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388808219 is a prime.

It is a super-2 number, since 2×388808219² = 302343662323903922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (388808209) 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, 194404109 + 194404110.

It is an arithmetic number, because the mean of its divisors is an integer number (194404110).

Almost surely, 2^388808219 is an apocalyptic number.

388808219 is a deficient number, since it is larger than the sum of its proper divisors (1).

388808219 is an equidigital number, since it uses as much as digits as its factorization.

388808219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 47.

The square root of 388808219 is about 19718.2204825892. The cubic root of 388808219 is about 729.8693823974.

The spelling of 388808219 in words is "three hundred eighty-eight million, eight hundred eight thousand, two hundred nineteen".