2220329 has 4 divisors (see below), whose sum is σ = 2262276. Its totient is φ = 2178384.

The previous prime is 2220311. The next prime is 2220331. The reversal of 2220329 is 9230222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1817104 + 403225 = 1348^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220329 - 2⁸ = 2220073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220329.

It is not an unprimeable number, because it can be changed into a prime (2220349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20894 + ... + 20999.

It is an arithmetic number, because the mean of its divisors is an integer number (565569).

2^2220329 is an apocalyptic number.

It is an amenable number.

2220329 is a deficient number, since it is larger than the sum of its proper divisors (41947).

2220329 is an equidigital number, since it uses as much as digits as its factorization.

2220329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41946.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2220329 is about 1490.0768436561. The cubic root of 2220329 is about 130.4585189379.

The spelling of 2220329 in words is "two million, two hundred twenty thousand, three hundred twenty-nine".