388469866 has 16 divisors (see below), whose sum is σ = 602599680. Its totient is φ = 187626240.

The previous prime is 388469857. The next prime is 388469881. The reversal of 388469866 is 668964883.

It is a self number, because there is not a number n which added to its sum of digits gives 388469866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30345 + ... + 41203.

It is an arithmetic number, because the mean of its divisors is an integer number (37662480).

Almost surely, 2^388469866 is an apocalyptic number.

388469866 is a deficient number, since it is larger than the sum of its proper divisors (214129814).

388469866 is a wasteful number, since it uses less digits than its factorization.

388469866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11469.

The product of its digits is 11943936, while the sum is 58.

The square root of 388469866 is about 19709.6389109491. The cubic root of 388469866 is about 729.6576026105.

The spelling of 388469866 in words is "three hundred eighty-eight million, four hundred sixty-nine thousand, eight hundred sixty-six".