12290749 has 2 divisors, whose sum is σ = 12290750. Its totient is φ = 12290748.

The previous prime is 12290743. The next prime is 12290801. The reversal of 12290749 is 94709221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7371225 + 4919524 = 2715^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 12290749 - 2¹¹ = 12288701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12290743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6145374 + 6145375.

It is an arithmetic number, because the mean of its divisors is an integer number (6145375).

Almost surely, 2^12290749 is an apocalyptic number.

It is an amenable number.

12290749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12290749 is an equidigital number, since it uses as much as digits as its factorization.

12290749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12290749 is about 3505.8164526969. The cubic root of 12290749 is about 230.7771380567. Note that the first 3 decimals are identical.

The spelling of 12290749 in words is "twelve million, two hundred ninety thousand, seven hundred forty-nine".