388628843 has 2 divisors, whose sum is σ = 388628844. Its totient is φ = 388628842.

The previous prime is 388628839. The next prime is 388628893. The reversal of 388628843 is 348826883.

It is an a-pointer prime, because the next prime (388628893) can be obtained adding 388628843 to its sum of digits (50).

It is a weak prime.

It is an emirp because it is prime and its reverse (348826883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388628843 - 2² = 388628839 is a prime.

It is a super-2 number, since 2×388628843² = 302064755223037298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388628791 and 388628800.

It is not a weakly prime, because it can be changed into another prime (388628833) 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, 194314421 + 194314422.

It is an arithmetic number, because the mean of its divisors is an integer number (194314422).

Almost surely, 2^388628843 is an apocalyptic number.

388628843 is a deficient number, since it is larger than the sum of its proper divisors (1).

388628843 is an equidigital number, since it uses as much as digits as its factorization.

388628843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1769472, while the sum is 50.

The square root of 388628843 is about 19713.6714743855. The cubic root of 388628843 is about 729.7571238061.

The spelling of 388628843 in words is "three hundred eighty-eight million, six hundred twenty-eight thousand, eight hundred forty-three".