386940 has 24 divisors (see below), whose sum is σ = 1083600. Its totient is φ = 103168.

The previous prime is 386927. The next prime is 386963. The reversal of 386940 is 49683.

386940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 386898 and 386907.

It is a congruent number.

It is an unprimeable number.

386940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3165 + ... + 3284.

It is an arithmetic number, because the mean of its divisors is an integer number (45150).

2³⁸⁶⁹⁴⁰ is an apocalyptic number.

386940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

386940 is an abundant number, since it is smaller than the sum of its proper divisors (696660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

386940 is a wasteful number, since it uses less digits than its factorization.

386940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461 (or 6459 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 386940 is about 622.0450144483. The cubic root of 386940 is about 72.8698500382.

It can be divided in two parts, 386 and 940, that added together give a triangular number (1326 = T₅₁).

The spelling of 386940 in words is "three hundred eighty-six thousand, nine hundred forty".