3996842 has 12 divisors (see below), whose sum is σ = 6127398. Its totient is φ = 1954800.

The previous prime is 3996827. The next prime is 3996857. The reversal of 3996842 is 2486993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3996827) and next prime (3996857).

It can be written as a sum of positive squares in 3 ways, for example, as 151321 + 3845521 = 389^2 + 1961^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3996842.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21992 + ... + 22172.

Almost surely, 2^3996842 is an apocalyptic number.

3996842 is a deficient number, since it is larger than the sum of its proper divisors (2130556).

3996842 is an equidigital number, since it uses as much as digits as its factorization.

3996842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 244 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 3996842 is about 1999.2103441109. The cubic root of 3996842 is about 158.6983190938.

The spelling of 3996842 in words is "three million, nine hundred ninety-six thousand, eight hundred forty-two".