3988842 has 32 divisors (see below), whose sum is σ = 9374400. Its totient is φ = 1115520.

The previous prime is 3988823. The next prime is 3988877. The reversal of 3988842 is 2488893.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3988794 and 3988803.

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, 1467 + ... + 3182.

It is an arithmetic number, because the mean of its divisors is an integer number (292950).

Almost surely, 2^3988842 is an apocalyptic number.

3988842 is an abundant number, since it is smaller than the sum of its proper divisors (5385558).

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

3988842 is a wasteful number, since it uses less digits than its factorization.

3988842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4678.

The product of its digits is 110592, while the sum is 42.

The square root of 3988842 is about 1997.2085519545. The cubic root of 3988842 is about 158.5923658975.

The spelling of 3988842 in words is "three million, nine hundred eighty-eight thousand, eight hundred forty-two".