389776686866 has 16 divisors (see below), whose sum is σ = 668442443904. Its totient is φ = 166983692064.

The previous prime is 389776686847. The next prime is 389776686913. The reversal of 389776686866 is 668686677983.

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, 5250110 + ... + 5323833.

It is an arithmetic number, because the mean of its divisors is an integer number (41777652744).

Almost surely, 2^389776686866 is an apocalyptic number.

389776686866 is a deficient number, since it is larger than the sum of its proper divisors (278665757038).

389776686866 is a wasteful number, since it uses less digits than its factorization.

389776686866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10576585.

The product of its digits is 5267275776, while the sum is 80.

The spelling of 389776686866 in words is "three hundred eighty-nine billion, seven hundred seventy-six million, six hundred eighty-six thousand, eight hundred sixty-six".