384861 has 4 divisors (see below), whose sum is σ = 513152. Its totient is φ = 256572.

The previous prime is 384851. The next prime is 384889. The reversal of 384861 is 168483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 384861 - 2⁷ = 384733 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64141 + ... + 64146.

It is an arithmetic number, because the mean of its divisors is an integer number (128288).

2³⁸⁴⁸⁶¹ is an apocalyptic number.

It is an amenable number.

384861 is a deficient number, since it is larger than the sum of its proper divisors (128291).

384861 is a wasteful number, since it uses less digits than its factorization.

384861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128290.

The product of its digits is 4608, while the sum is 30.

The square root of 384861 is about 620.3716627958. The cubic root of 384861 is about 72.7391074964.

The spelling of 384861 in words is "three hundred eighty-four thousand, eight hundred sixty-one".