386857047 has 16 divisors (see below), whose sum is σ = 528187392. Its totient is φ = 251745120.

The previous prime is 386857019. The next prime is 386857057. The reversal of 386857047 is 740758683.

It is not a de Polignac number, because 386857047 - 2¹² = 386852951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 386856987 and 386857005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386857057) 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 15 ways as a sum of consecutive naturals, for example, 52522 + ... + 59432.

It is an arithmetic number, because the mean of its divisors is an integer number (33011712).

Almost surely, 2^386857047 is an apocalyptic number.

386857047 is a deficient number, since it is larger than the sum of its proper divisors (141330345).

386857047 is a wasteful number, since it uses less digits than its factorization.

386857047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7358.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 386857047 is about 19668.6818826275. The cubic root of 386857047 is about 728.6464233617.

The spelling of 386857047 in words is "three hundred eighty-six million, eight hundred fifty-seven thousand, forty-seven".