3898986 has 64 divisors (see below), whose sum is σ = 9907968. Its totient is φ = 995328.

The previous prime is 3898981. The next prime is 3898991. The reversal of 3898986 is 6898983.

It is an interprime number because it is at equal distance from previous prime (3898981) and next prime (3898991).

It is not an unprimeable number, because it can be changed into a prime (3898981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20106 + ... + 20298.

It is an arithmetic number, because the mean of its divisors is an integer number (154812).

Almost surely, 2^3898986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3898986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4953984).

3898986 is an abundant number, since it is smaller than the sum of its proper divisors (6008982).

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

3898986 is a wasteful number, since it uses less digits than its factorization.

3898986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255.

The product of its digits is 746496, while the sum is 51.

The square root of 3898986 is about 1974.5850196940. The cubic root of 3898986 is about 157.3924486194.

It can be divided in two parts, 3898 and 986, that added together give a palindrome (4884).

The spelling of 3898986 in words is "three million, eight hundred ninety-eight thousand, nine hundred eighty-six".