3996940 has 24 divisors (see below), whose sum is σ = 8759520. Its totient is φ = 1529088.

The previous prime is 3996931. The next prime is 3996959. The reversal of 3996940 is 496993.

It is a junction number, because it is equal to n+sod(n) for n = 3996893 and 3996902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3885 + ... + 4804.

It is an arithmetic number, because the mean of its divisors is an integer number (364980).

Almost surely, 2^3996940 is an apocalyptic number.

It is an amenable number.

3996940 is an abundant number, since it is smaller than the sum of its proper divisors (4762580).

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

3996940 is a wasteful number, since it uses less digits than its factorization.

3996940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8721 (or 8719 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 3996940 is about 1999.2348536378. The cubic root of 3996940 is about 158.6996161435.

The spelling of 3996940 in words is "three million, nine hundred ninety-six thousand, nine hundred forty".