386889866 has 16 divisors (see below), whose sum is σ = 635339808. Its totient is φ = 175234800.

The previous prime is 386889847. The next prime is 386889887. The reversal of 386889866 is 668988683.

It is a super-3 number, since 3×386889866³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 386889799 and 386889808.

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, 24845 + ... + 37296.

It is an arithmetic number, because the mean of its divisors is an integer number (39708738).

Almost surely, 2^386889866 is an apocalyptic number.

386889866 is a deficient number, since it is larger than the sum of its proper divisors (248449942).

386889866 is a wasteful number, since it uses less digits than its factorization.

386889866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62437.

The product of its digits is 23887872, while the sum is 62.

The square root of 386889866 is about 19669.5161608007. The cubic root of 386889866 is about 728.6670276744.

The spelling of 386889866 in words is "three hundred eighty-six million, eight hundred eighty-nine thousand, eight hundred sixty-six".