12272609 has 2 divisors, whose sum is σ = 12272610. Its totient is φ = 12272608.

The previous prime is 12272599. The next prime is 12272633. The reversal of 12272609 is 90627221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12271009 + 1600 = 3503^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 12272609 - 2²⁰ = 11224033 is a prime.

It is a super-3 number, since 3×12272609³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12272699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6136304 + 6136305.

It is an arithmetic number, because the mean of its divisors is an integer number (6136305).

Almost surely, 2^12272609 is an apocalyptic number.

It is an amenable number.

12272609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12272609 is an equidigital number, since it uses as much as digits as its factorization.

12272609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 12272609 is about 3503.2283682341. The cubic root of 12272609 is about 230.6635469728.

The spelling of 12272609 in words is "twelve million, two hundred seventy-two thousand, six hundred nine".