3981888 has 84 divisors (see below), whose sum is σ = 11834368. Its totient is φ = 1278720.

The previous prime is 3981883. The next prime is 3981889. The reversal of 3981888 is 8881893.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3981881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17745 + ... + 17967.

Almost surely, 2^3981888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3981888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5917184).

3981888 is an abundant number, since it is smaller than the sum of its proper divisors (7852480).

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

3981888 is a wasteful number, since it uses less digits than its factorization.

3981888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 259 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 3981888 is about 1995.4668626665. The cubic root of 3981888 is about 158.5001509285.

The spelling of 3981888 in words is "three million, nine hundred eighty-one thousand, eight hundred eighty-eight".