388836388 has 6 divisors (see below), whose sum is σ = 680463686. Its totient is φ = 194418192.

The previous prime is 388836377. The next prime is 388836397. The reversal of 388836388 is 883638883.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 388799524 + 36864 = 19718^2 + 192^2 .

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 as a sum of consecutive naturals, namely, 48604545 + ... + 48604552.

Almost surely, 2^388836388 is an apocalyptic number.

It is an amenable number.

388836388 is a deficient number, since it is larger than the sum of its proper divisors (291627298).

388836388 is a wasteful number, since it uses less digits than its factorization.

388836388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97209101 (or 97209099 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 55.

The square root of 388836388 is about 19718.9347582470. The cubic root of 388836388 is about 729.8870082201.

The spelling of 388836388 in words is "three hundred eighty-eight million, eight hundred thirty-six thousand, three hundred eighty-eight".