386421 has 8 divisors (see below), whose sum is σ = 588864. Its totient is φ = 220800.

The previous prime is 386413. The next prime is 386429. The reversal of 386421 is 124683.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (386413) and next prime (386429).

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

It is not a de Polignac number, because 386421 - 2³ = 386413 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 386391 and 386400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9180 + ... + 9221.

It is an arithmetic number, because the mean of its divisors is an integer number (73608).

2³⁸⁶⁴²¹ is an apocalyptic number.

It is an amenable number.

386421 is a deficient number, since it is larger than the sum of its proper divisors (202443).

386421 is a wasteful number, since it uses less digits than its factorization.

386421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18411.

The product of its digits is 1152, while the sum is 24.

The square root of 386421 is about 621.6277020854. The cubic root of 386421 is about 72.8372555156.

The spelling of 386421 in words is "three hundred eighty-six thousand, four hundred twenty-one".