41905309 has 2 divisors, whose sum is σ = 41905310. Its totient is φ = 41905308.

The previous prime is 41905291. The next prime is 41905387. The reversal of 41905309 is 90350914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31114084 + 10791225 = 5578^2 + 3285^2 .

It is a cyclic number.

It is not a de Polignac number, because 41905309 - 2¹³ = 41897117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41905009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20952654 + 20952655.

It is an arithmetic number, because the mean of its divisors is an integer number (20952655).

Almost surely, 2^41905309 is an apocalyptic number.

It is an amenable number.

41905309 is a deficient number, since it is larger than the sum of its proper divisors (1).

41905309 is an equidigital number, since it uses as much as digits as its factorization.

41905309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 41905309 is about 6473.4310068155. The cubic root of 41905309 is about 347.3412390048.

The spelling of 41905309 in words is "forty-one million, nine hundred five thousand, three hundred nine".