386215 has 4 divisors (see below), whose sum is σ = 463464. Its totient is φ = 308968.

The previous prime is 386173. The next prime is 386219. The reversal of 386215 is 512683.

It is a happy number.

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 386215 - 2¹³ = 378023 is a prime.

It is a Duffinian number.

386215 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 386215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38617 + ... + 38626.

It is an arithmetic number, because the mean of its divisors is an integer number (115866).

2³⁸⁶²¹⁵ is an apocalyptic number.

386215 is a deficient number, since it is larger than the sum of its proper divisors (77249).

386215 is an equidigital number, since it uses as much as digits as its factorization.

386215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77248.

The product of its digits is 1440, while the sum is 25.

The square root of 386215 is about 621.4619859654. The cubic root of 386215 is about 72.8243100996.

Adding to 386215 its reverse (512683), we get a palindrome (898898).

The spelling of 386215 in words is "three hundred eighty-six thousand, two hundred fifteen".