3072209 has 4 divisors (see below), whose sum is σ = 3511104. Its totient is φ = 2633316.

The previous prime is 3072197. The next prime is 3072211. The reversal of 3072209 is 9022703.

3072209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9022703 = 151 ⋅59753.

It is a de Polignac number, because none of the positive numbers 2^k-3072209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3072229) 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 3 ways as a sum of consecutive naturals, for example, 219437 + ... + 219450.

It is an arithmetic number, because the mean of its divisors is an integer number (877776).

Almost surely, 2^3072209 is an apocalyptic number.

It is an amenable number.

3072209 is a deficient number, since it is larger than the sum of its proper divisors (438895).

3072209 is an equidigital number, since it uses as much as digits as its factorization.

3072209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438894.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 3072209 is about 1752.7718048851. The cubic root of 3072209 is about 145.3729440376.

The spelling of 3072209 in words is "three million, seventy-two thousand, two hundred nine".