41971409 has 2 divisors, whose sum is σ = 41971410. Its totient is φ = 41971408.

The previous prime is 41971403. The next prime is 41971411. The reversal of 41971409 is 90417914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38254225 + 3717184 = 6185^2 + 1928^2 .

It is a cyclic number.

It is not a de Polignac number, because 41971409 - 2⁴ = 41971393 is a prime.

It is a Sophie Germain prime.

Together with 41971411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (41971403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20985704 + 20985705.

It is an arithmetic number, because the mean of its divisors is an integer number (20985705).

Almost surely, 2^41971409 is an apocalyptic number.

It is an amenable number.

41971409 is a deficient number, since it is larger than the sum of its proper divisors (1).

41971409 is an equidigital number, since it uses as much as digits as its factorization.

41971409 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 35.

The square root of 41971409 is about 6478.5344793402. The cubic root of 41971409 is about 347.5237711255.

The spelling of 41971409 in words is "forty-one million, nine hundred seventy-one thousand, four hundred nine".