41984021 has 2 divisors, whose sum is σ = 41984022. Its totient is φ = 41984020.

The previous prime is 41983969. The next prime is 41984023. The reversal of 41984021 is 12048914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40322500 + 1661521 = 6350^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 41984021 - 2⁶ = 41983957 is a prime.

It is a Sophie Germain prime.

Together with 41984023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41984023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20992010 + 20992011.

It is an arithmetic number, because the mean of its divisors is an integer number (20992011).

Almost surely, 2^41984021 is an apocalyptic number.

It is an amenable number.

41984021 is a deficient number, since it is larger than the sum of its proper divisors (1).

41984021 is an equidigital number, since it uses as much as digits as its factorization.

41984021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 41984021 is about 6479.5077745150. The cubic root of 41984021 is about 347.5585768100.

The spelling of 41984021 in words is "forty-one million, nine hundred eighty-four thousand, twenty-one".