386816873 has 4 divisors (see below), whose sum is σ = 391163220. Its totient is φ = 382470528.

The previous prime is 386816849. The next prime is 386816893. The reversal of 386816873 is 378618683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378618683 = 743 ⋅509581.

It can be written as a sum of positive squares in 2 ways, for example, as 245016409 + 141800464 = 15653^2 + 11908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386816873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (386816893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173040 + ... + 2173217.

It is an arithmetic number, because the mean of its divisors is an integer number (97790805).

Almost surely, 2^386816873 is an apocalyptic number.

It is an amenable number.

386816873 is a deficient number, since it is larger than the sum of its proper divisors (4346347).

386816873 is an equidigital number, since it uses as much as digits as its factorization.

386816873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346346.

The product of its digits is 1161216, while the sum is 50.

The square root of 386816873 is about 19667.6605878788. The cubic root of 386816873 is about 728.6211998715.

It can be divided in two parts, 38681 and 6873, that added together give a palindrome (45554).

The spelling of 386816873 in words is "three hundred eighty-six million, eight hundred sixteen thousand, eight hundred seventy-three".