3963321 has 12 divisors (see below), whose sum is σ = 5743920. Its totient is φ = 2633400.

The previous prime is 3963317. The next prime is 3963359. The reversal of 3963321 is 1233693.

3963321 is a `hidden beast` number, since 3 + 9 + 633 + 21 = 666.

It is not a de Polignac number, because 3963321 - 2² = 3963317 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (3963301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3246 + ... + 4296.

It is an arithmetic number, because the mean of its divisors is an integer number (478660).

Almost surely, 2^3963321 is an apocalyptic number.

It is an amenable number.

3963321 is a deficient number, since it is larger than the sum of its proper divisors (1780599).

3963321 is a wasteful number, since it uses less digits than its factorization.

3963321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1473 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 3963321 is about 1990.8091319863. The cubic root of 3963321 is about 158.2534121738.

The spelling of 3963321 in words is "three million, nine hundred sixty-three thousand, three hundred twenty-one".