4231986 has 32 divisors (see below), whose sum is σ = 9488448. Its totient is φ = 1247040.

The previous prime is 4231967. The next prime is 4231991. The reversal of 4231986 is 6891324.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1576 + ... + 3308.

It is an arithmetic number, because the mean of its divisors is an integer number (296514).

Almost surely, 2^4231986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4231986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4744224).

4231986 is an abundant number, since it is smaller than the sum of its proper divisors (5256462).

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

4231986 is a wasteful number, since it uses less digits than its factorization.

4231986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786.

The product of its digits is 10368, while the sum is 33.

The square root of 4231986 is about 2057.1791365849. The cubic root of 4231986 is about 161.7514096166.

The spelling of 4231986 in words is "four million, two hundred thirty-one thousand, nine hundred eighty-six".