3989136 has 40 divisors (see below), whose sum is σ = 10561824. Its totient is φ = 1296640.

The previous prime is 3989123. The next prime is 3989137. The reversal of 3989136 is 6319893.

It is a junction number, because it is equal to n+sod(n) for n = 3989094 and 3989103.

It is not an unprimeable number, because it can be changed into a prime (3989137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955 + ... + 2981.

Almost surely, 2^3989136 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 3989136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5280912).

3989136 is an abundant number, since it is smaller than the sum of its proper divisors (6572688).

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

3989136 is a wasteful number, since it uses less digits than its factorization.

3989136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079 (or 2073 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 3989136 is about 1997.2821533274. The cubic root of 3989136 is about 158.5962621837.

The spelling of 3989136 in words is "three million, nine hundred eighty-nine thousand, one hundred thirty-six".