383986 has 8 divisors (see below), whose sum is σ = 591660. Its totient is φ = 186768.

The previous prime is 383983. The next prime is 383987. The reversal of 383986 is 689383.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 330625 + 53361 = 575^2 + 231^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (383983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2521 + ... + 2668.

2³⁸³⁹⁸⁶ is an apocalyptic number.

383986 is a deficient number, since it is larger than the sum of its proper divisors (207674).

383986 is a wasteful number, since it uses less digits than its factorization.

383986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5228.

The product of its digits is 31104, while the sum is 37.

The square root of 383986 is about 619.6660390888. Note that the first 3 decimals coincide. The cubic root of 383986 is about 72.6839403800.

It can be divided in two parts, 383 and 986, that added together give a square (1369 = 37²).

The spelling of 383986 in words is "three hundred eighty-three thousand, nine hundred eighty-six".