3986238 has 32 divisors (see below), whose sum is σ = 8524800. Its totient is φ = 1238976.

The previous prime is 3986237. The next prime is 3986243. The reversal of 3986238 is 8326893.

Its product of digits (62208) is a multiple of the sum of its prime divisors (576).

It is a junction number, because it is equal to n+sod(n) for n = 3986196 and 3986205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8083 + ... + 8561.

It is an arithmetic number, because the mean of its divisors is an integer number (266400).

Almost surely, 2^3986238 is an apocalyptic number.

3986238 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3986238 is an abundant number, since it is smaller than the sum of its proper divisors (4538562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3986238 is a wasteful number, since it uses less digits than its factorization.

3986238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

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

The square root of 3986238 is about 1996.5565356383. The cubic root of 3986238 is about 158.5578475736.

It can be divided in two parts, 3986 and 238, that added together give a palindrome (4224).

The spelling of 3986238 in words is "three million, nine hundred eighty-six thousand, two hundred thirty-eight".