3986823 has 8 divisors (see below), whose sum is σ = 5628528. Its totient is φ = 2501504.

The previous prime is 3986813. The next prime is 3986839. The reversal of 3986823 is 3286893.

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

It is a cyclic number.

It is not a de Polignac number, because 3986823 - 2¹⁶ = 3921287 is a prime.

It is a d-powerful number, because it can be written as 3 + 9 + 8⁵ + 6⁸ + 8⁷ + 2⁷ + 3¹¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986803) 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 7 ways as a sum of consecutive naturals, for example, 39036 + ... + 39137.

It is an arithmetic number, because the mean of its divisors is an integer number (703566).

Almost surely, 2^3986823 is an apocalyptic number.

3986823 is a deficient number, since it is larger than the sum of its proper divisors (1641705).

3986823 is a wasteful number, since it uses less digits than its factorization.

3986823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78193.

The product of its digits is 62208, while the sum is 39.

The square root of 3986823 is about 1996.7030325013. The cubic root of 3986823 is about 158.5656035751.

The spelling of 3986823 in words is "three million, nine hundred eighty-six thousand, eight hundred twenty-three".