12291941 has 2 divisors, whose sum is σ = 12291942. Its totient is φ = 12291940.

The previous prime is 12291899. The next prime is 12291967. The reversal of 12291941 is 14919221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9302500 + 2989441 = 3050^2 + 1729^2 .

It is a cyclic number.

It is not a de Polignac number, because 12291941 - 2¹⁰ = 12290917 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (12291991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6145970 + 6145971.

It is an arithmetic number, because the mean of its divisors is an integer number (6145971).

Almost surely, 2^12291941 is an apocalyptic number.

It is an amenable number.

12291941 is a deficient number, since it is larger than the sum of its proper divisors (1).

12291941 is an equidigital number, since it uses as much as digits as its factorization.

12291941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 29.

The square root of 12291941 is about 3505.9864517707. The cubic root of 12291941 is about 230.7845983413.

The spelling of 12291941 in words is "twelve million, two hundred ninety-one thousand, nine hundred forty-one".