12270749 has 2 divisors, whose sum is σ = 12270750. Its totient is φ = 12270748.

The previous prime is 12270743. The next prime is 12270757. The reversal of 12270749 is 94707221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10562500 + 1708249 = 3250^2 + 1307^2 .

It is a cyclic number.

It is not a de Polignac number, because 12270749 - 2⁴ = 12270733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12270743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6135374 + 6135375.

It is an arithmetic number, because the mean of its divisors is an integer number (6135375).

Almost surely, 2^12270749 is an apocalyptic number.

It is an amenable number.

12270749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12270749 is an equidigital number, since it uses as much as digits as its factorization.

12270749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 12270749 is about 3502.9628887557. The cubic root of 12270749 is about 230.6518934911.

The spelling of 12270749 in words is "twelve million, two hundred seventy thousand, seven hundred forty-nine".