386409 has 8 divisors (see below), whose sum is σ = 519232. Its totient is φ = 255600.

The previous prime is 386401. The next prime is 386411. The reversal of 386409 is 904683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 386409 - 2³ = 386401 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 386409.

It is not an unprimeable number, because it can be changed into a prime (386401) 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 7 ways as a sum of consecutive naturals, for example, 27 + ... + 879.

It is an arithmetic number, because the mean of its divisors is an integer number (64904).

2³⁸⁶⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

386409 is a deficient number, since it is larger than the sum of its proper divisors (132823).

386409 is a wasteful number, since it uses less digits than its factorization.

386409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007.

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

The square root of 386409 is about 621.6180499310. The cubic root of 386409 is about 72.8365015399.

The spelling of 386409 in words is "three hundred eighty-six thousand, four hundred nine".