12076209 has 40 divisors (see below), whose sum is σ = 19209960. Its totient is φ = 7547904.

The previous prime is 12076201. The next prime is 12076213. The reversal of 12076209 is 90267021.

It can be written as a sum of positive squares in 4 ways, for example, as 2712609 + 9363600 = 1647^2 + 3060^2 .

It is not a de Polignac number, because 12076209 - 2³ = 12076201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12076201) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 124449 + ... + 124545.

It is an arithmetic number, because the mean of its divisors is an integer number (480249).

Almost surely, 2^12076209 is an apocalyptic number.

It is an amenable number.

12076209 is a deficient number, since it is larger than the sum of its proper divisors (7133751).

12076209 is an equidigital number, since it uses as much as digits as its factorization.

12076209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12076209 is about 3475.0840277611. The cubic root of 12076209 is about 229.4264790771.

The spelling of 12076209 in words is "twelve million, seventy-six thousand, two hundred nine".