3996449 has 4 divisors (see below), whose sum is σ = 4000560. Its totient is φ = 3992340.

The previous prime is 3996439. The next prime is 3996467. The reversal of 3996449 is 9446993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3996449 - 2⁸ = 3996193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3996439) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 314 + ... + 2844.

It is an arithmetic number, because the mean of its divisors is an integer number (1000140).

Almost surely, 2^3996449 is an apocalyptic number.

It is an amenable number.

3996449 is a deficient number, since it is larger than the sum of its proper divisors (4111).

3996449 is a wasteful number, since it uses less digits than its factorization.

3996449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110.

The product of its digits is 209952, while the sum is 44.

The square root of 3996449 is about 1999.1120528875. The cubic root of 3996449 is about 158.6931174468.

The spelling of 3996449 in words is "three million, nine hundred ninety-six thousand, four hundred forty-nine".