3985956 has 96 divisors (see below), whose sum is σ = 11854080. Its totient is φ = 1147392.

The previous prime is 3985951. The next prime is 3985999. The reversal of 3985956 is 6595893.

It is not an unprimeable number, because it can be changed into a prime (3985951) 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, 23785 + ... + 23951.

It is an arithmetic number, because the mean of its divisors is an integer number (123480).

Almost surely, 2^3985956 is an apocalyptic number.

3985956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3985956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5927040).

3985956 is an abundant number, since it is smaller than the sum of its proper divisors (7868124).

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

3985956 is a wasteful number, since it uses less digits than its factorization.

3985956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 202 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 3985956 is about 1996.4859127978. The cubic root of 3985956 is about 158.5541085121.

The spelling of 3985956 in words is "three million, nine hundred eighty-five thousand, nine hundred fifty-six".