386647855 has 8 divisors (see below), whose sum is σ = 506157264. Its totient is φ = 281198400.

The previous prime is 386647843. The next prime is 386647861. The reversal of 386647855 is 558746683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 386647855 - 2⁵ = 386647823 is a prime.

It is a super-2 number, since 2×386647855² = 298993127552202050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3514926 + ... + 3515035.

It is an arithmetic number, because the mean of its divisors is an integer number (63269658).

Almost surely, 2^386647855 is an apocalyptic number.

386647855 is a deficient number, since it is larger than the sum of its proper divisors (119509409).

386647855 is a wasteful number, since it uses less digits than its factorization.

386647855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7029977.

The product of its digits is 4838400, while the sum is 52.

The square root of 386647855 is about 19663.3632677627. The cubic root of 386647855 is about 728.5150617585.

The spelling of 386647855 in words is "three hundred eighty-six million, six hundred forty-seven thousand, eight hundred fifty-five".