386845 has 4 divisors (see below), whose sum is σ = 464220. Its totient is φ = 309472.

The previous prime is 386839. The next prime is 386851. The reversal of 386845 is 548683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548683 = 373 ⋅1471.

It is an interprime number because it is at equal distance from previous prime (386839) and next prime (386851).

It can be written as a sum of positive squares in 2 ways, for example, as 49284 + 337561 = 222^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 386845 - 2⁹ = 386333 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 386845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38680 + ... + 38689.

It is an arithmetic number, because the mean of its divisors is an integer number (116055).

2³⁸⁶⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

386845 is a deficient number, since it is larger than the sum of its proper divisors (77375).

386845 is an equidigital number, since it uses as much as digits as its factorization.

386845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77374.

The product of its digits is 23040, while the sum is 34.

The square root of 386845 is about 621.9686487276. The cubic root of 386845 is about 72.8638859763.

The spelling of 386845 in words is "three hundred eighty-six thousand, eight hundred forty-five".