3923321 has 2 divisors, whose sum is σ = 3923322. Its totient is φ = 3923320.

The previous prime is 3923303. The next prime is 3923347. The reversal of 3923321 is 1233293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2325625 + 1597696 = 1525^2 + 1264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3923321 is a prime.

It is not a weakly prime, because it can be changed into another prime (5923321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961660 + 1961661.

It is an arithmetic number, because the mean of its divisors is an integer number (1961661).

Almost surely, 2^3923321 is an apocalyptic number.

It is an amenable number.

3923321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923321 is an equidigital number, since it uses as much as digits as its factorization.

3923321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 23.

The square root of 3923321 is about 1980.7374889167. The cubic root of 3923321 is about 157.7192177081.

Adding to 3923321 its product of digits (972), we get a palindrome (3924293).

The spelling of 3923321 in words is "three million, nine hundred twenty-three thousand, three hundred twenty-one".