3988746 has 48 divisors (see below), whose sum is σ = 9266400. Its totient is φ = 1236384.

The previous prime is 3988717. The next prime is 3988753. The reversal of 3988746 is 6478893.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36540 + ... + 36648.

It is an arithmetic number, because the mean of its divisors is an integer number (193050).

Almost surely, 2^3988746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3988746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4633200).

3988746 is an abundant number, since it is smaller than the sum of its proper divisors (5277654).

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

3988746 is a wasteful number, since it uses less digits than its factorization.

3988746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 240 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3988746 is about 1997.1845182657. The cubic root of 3988746 is about 158.5910935993.

The spelling of 3988746 in words is "three million, nine hundred eighty-eight thousand, seven hundred forty-six".