12055409 has 2 divisors, whose sum is σ = 12055410. Its totient is φ = 12055408.

The previous prime is 12055391. The next prime is 12055423. The reversal of 12055409 is 90455021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12054784 + 625 = 3472^2 + 25^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12055409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12055469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6027704 + 6027705.

It is an arithmetic number, because the mean of its divisors is an integer number (6027705).

Almost surely, 2^12055409 is an apocalyptic number.

It is an amenable number.

12055409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12055409 is an equidigital number, since it uses as much as digits as its factorization.

12055409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 12055409 is about 3472.0900045938. The cubic root of 12055409 is about 229.2946823853.

The spelling of 12055409 in words is "twelve million, fifty-five thousand, four hundred nine".