388606866 has 8 divisors (see below), whose sum is σ = 777213744. Its totient is φ = 129535620.

The previous prime is 388606861. The next prime is 388606879. The reversal of 388606866 is 668606883.

It is a sphenic number, since it is the product of 3 distinct primes.

388606866 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (388606861) 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, 32383900 + ... + 32383911.

It is an arithmetic number, because the mean of its divisors is an integer number (97151718).

Almost surely, 2^388606866 is an apocalyptic number.

388606866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

388606866 is a wasteful number, since it uses less digits than its factorization.

388606866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64767816.

The product of its (nonzero) digits is 1990656, while the sum is 51.

The square root of 388606866 is about 19713.1140614567. The cubic root of 388606866 is about 729.7433676006.

The spelling of 388606866 in words is "three hundred eighty-eight million, six hundred six thousand, eight hundred sixty-six".