386686458 has 12 divisors (see below), whose sum is σ = 837820698. Its totient is φ = 128895480.

The previous prime is 386686451. The next prime is 386686477. The reversal of 386686458 is 854686683.

It can be written as a sum of positive squares in only one way, i.e., 358458489 + 28227969 = 18933^2 + 5313^2 .

It is not an unprimeable number, because it can be changed into a prime (386686451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10741273 + ... + 10741308.

Almost surely, 2^386686458 is an apocalyptic number.

386686458 is an abundant number, since it is smaller than the sum of its proper divisors (451134240).

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

386686458 is a wasteful number, since it uses less digits than its factorization.

386686458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21482589 (or 21482586 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The square root of 386686458 is about 19664.3448403449. The cubic root of 386686458 is about 728.5393059820.

The spelling of 386686458 in words is "three hundred eighty-six million, six hundred eighty-six thousand, four hundred fifty-eight".