3996321 has 8 divisors (see below), whose sum is σ = 6089664. Its totient is φ = 2283600.

The previous prime is 3996283. The next prime is 3996323. The reversal of 3996321 is 1236993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3996321 - 2⁷ = 3996193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3996323) 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 7 ways as a sum of consecutive naturals, for example, 95130 + ... + 95171.

It is an arithmetic number, because the mean of its divisors is an integer number (761208).

Almost surely, 2^3996321 is an apocalyptic number.

It is an amenable number.

3996321 is a deficient number, since it is larger than the sum of its proper divisors (2093343).

3996321 is a wasteful number, since it uses less digits than its factorization.

3996321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190311.

The product of its digits is 8748, while the sum is 33.

The square root of 3996321 is about 1999.0800384177. The cubic root of 3996321 is about 158.6914231981.

The spelling of 3996321 in words is "three million, nine hundred ninety-six thousand, three hundred twenty-one".