329222009 has 4 divisors (see below), whose sum is σ = 329315316. Its totient is φ = 329128704.

The previous prime is 329221957. The next prime is 329222011. The reversal of 329222009 is 900222923.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900222923 = 2687 ⋅335029.

It can be written as a sum of positive squares in 2 ways, for example, as 17875984 + 311346025 = 4228^2 + 17645^2 .

It is a cyclic number.

It is not a de Polignac number, because 329222009 - 2¹² = 329217913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (329222029) 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, 41144 + ... + 48489.

It is an arithmetic number, because the mean of its divisors is an integer number (82328829).

Almost surely, 2^329222009 is an apocalyptic number.

It is an amenable number.

329222009 is a deficient number, since it is larger than the sum of its proper divisors (93307).

329222009 is an equidigital number, since it uses as much as digits as its factorization.

329222009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93306.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 329222009 is about 18144.4759913314. The cubic root of 329222009 is about 690.4988404211.

The spelling of 329222009 in words is "three hundred twenty-nine million, two hundred twenty-two thousand, nine".