386858866 has 4 divisors (see below), whose sum is σ = 580288302. Its totient is φ = 193429432.

The previous prime is 386858863. The next prime is 386858893. The reversal of 386858866 is 668858683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 668858683 = 5107 ⋅130969.

It can be written as a sum of positive squares in only one way, i.e., 319372641 + 67486225 = 17871^2 + 8215^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 386858866.

It is not an unprimeable number, because it can be changed into a prime (386858863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96714715 + ... + 96714718.

Almost surely, 2^386858866 is an apocalyptic number.

386858866 is a deficient number, since it is larger than the sum of its proper divisors (193429436).

386858866 is a wasteful number, since it uses less digits than its factorization.

386858866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193429435.

The product of its digits is 13271040, while the sum is 58.

The square root of 386858866 is about 19668.7281235976. The cubic root of 386858866 is about 728.6475653906.

The spelling of 386858866 in words is "three hundred eighty-six million, eight hundred fifty-eight thousand, eight hundred sixty-six".