3229921 has 6 divisors (see below), whose sum is σ = 3338466. Its totient is φ = 3124800.

The previous prime is 3229909. The next prime is 3229927. The reversal of 3229921 is 1299223.

It can be written as a sum of positive squares in only one way, i.e., 3013696 + 216225 = 1736^2 + 465^2 .

It is not a de Polignac number, because 3229921 - 2⁹ = 3229409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3229921.

It is not an unprimeable number, because it can be changed into a prime (3229927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 720 + ... + 2641.

It is an arithmetic number, because the mean of its divisors is an integer number (556411).

Almost surely, 2^3229921 is an apocalyptic number.

3229921 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3229921 is the 961-st nonagonal number.

It is an amenable number.

3229921 is a deficient number, since it is larger than the sum of its proper divisors (108545).

3229921 is an equidigital number, since it uses as much as digits as its factorization.

3229921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423 (or 3392 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 3229921 is about 1797.1980970388. The cubic root of 3229921 is about 147.8191271070.

The spelling of 3229921 in words is "three million, two hundred twenty-nine thousand, nine hundred twenty-one".