386809447 has 4 divisors (see below), whose sum is σ = 386864920. Its totient is φ = 386753976.

The previous prime is 386809441. The next prime is 386809463. The reversal of 386809447 is 744908683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 386809447 - 2³ = 386809439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 386809447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386809441) 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 3 ways as a sum of consecutive naturals, for example, 15468 + ... + 31825.

It is an arithmetic number, because the mean of its divisors is an integer number (96716230).

Almost surely, 2^386809447 is an apocalyptic number.

386809447 is a deficient number, since it is larger than the sum of its proper divisors (55473).

386809447 is an equidigital number, since it uses as much as digits as its factorization.

386809447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55472.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 386809447 is about 19667.4717999035. The cubic root of 386809447 is about 728.6165372210.

The spelling of 386809447 in words is "three hundred eighty-six million, eight hundred nine thousand, four hundred forty-seven".