388788223 has 4 divisors (see below), whose sum is σ = 393156720. Its totient is φ = 384419728.

The previous prime is 388788221. The next prime is 388788259. The reversal of 388788223 is 322887883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322887883 = 131 ⋅2464793.

It is a cyclic number.

It is not a de Polignac number, because 388788223 - 2¹ = 388788221 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388788221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2184115 + ... + 2184292.

It is an arithmetic number, because the mean of its divisors is an integer number (98289180).

Almost surely, 2^388788223 is an apocalyptic number.

388788223 is a deficient number, since it is larger than the sum of its proper divisors (4368497).

388788223 is an equidigital number, since it uses as much as digits as its factorization.

388788223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368496.

The product of its digits is 1032192, while the sum is 49.

The square root of 388788223 is about 19717.7134323430. The cubic root of 388788223 is about 729.8568700433.

The spelling of 388788223 in words is "three hundred eighty-eight million, seven hundred eighty-eight thousand, two hundred twenty-three".