388812844 has 36 divisors (see below), whose sum is σ = 793234344. Its totient is φ = 166271616.

The previous prime is 388812833. The next prime is 388812887. The reversal of 388812844 is 448218883.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 388812794 and 388812803.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 100612 + ... + 104404.

Almost surely, 2^388812844 is an apocalyptic number.

It is an amenable number.

388812844 is an abundant number, since it is smaller than the sum of its proper divisors (404421500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388812844 is a wasteful number, since it uses less digits than its factorization.

388812844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334 (or 4325 counting only the distinct ones).

The product of its digits is 393216, while the sum is 46.

The square root of 388812844 is about 19718.3377595577. The cubic root of 388812844 is about 729.8722763970.

The spelling of 388812844 in words is "three hundred eighty-eight million, eight hundred twelve thousand, eight hundred forty-four".