3912321 has 8 divisors (see below), whose sum is σ = 5961664. Its totient is φ = 2235600.

The previous prime is 3912319. The next prime is 3912367. The reversal of 3912321 is 1232193.

It is a happy number.

3912321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3912321 - 2¹ = 3912319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 186301 = 3912321 / (3 + 9 + 1 + 2 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3912221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93130 + ... + 93171.

It is an arithmetic number, because the mean of its divisors is an integer number (745208).

Almost surely, 2^3912321 is an apocalyptic number.

It is an amenable number.

3912321 is a deficient number, since it is larger than the sum of its proper divisors (2049343).

3912321 is a wasteful number, since it uses less digits than its factorization.

3912321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186311.

The product of its digits is 324, while the sum is 21.

The square root of 3912321 is about 1977.9587963353. The cubic root of 3912321 is about 157.5716781328.

The spelling of 3912321 in words is "three million, nine hundred twelve thousand, three hundred twenty-one".