388816423 has 2 divisors, whose sum is σ = 388816424. Its totient is φ = 388816422.

The previous prime is 388816409. The next prime is 388816429. The reversal of 388816423 is 324618883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 388816423 - 2⁵ = 388816391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 388816423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388816429) 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, 194408211 + 194408212.

It is an arithmetic number, because the mean of its divisors is an integer number (194408212).

Almost surely, 2^388816423 is an apocalyptic number.

388816423 is a deficient number, since it is larger than the sum of its proper divisors (1).

388816423 is an equidigital number, since it uses as much as digits as its factorization.

388816423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 43.

The square root of 388816423 is about 19718.4285124348. The cubic root of 388816423 is about 729.8745158677.

The spelling of 388816423 in words is "three hundred eighty-eight million, eight hundred sixteen thousand, four hundred twenty-three".