40805441 has 2 divisors, whose sum is σ = 40805442. Its totient is φ = 40805440.

The previous prime is 40805437. The next prime is 40805459. The reversal of 40805441 is 14450804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 863041 = 6320^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 40805441 - 2² = 40805437 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40805441.

It is not a weakly prime, because it can be changed into another prime (40805461) 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, 20402720 + 20402721.

It is an arithmetic number, because the mean of its divisors is an integer number (20402721).

Almost surely, 2^40805441 is an apocalyptic number.

It is an amenable number.

40805441 is a deficient number, since it is larger than the sum of its proper divisors (1).

40805441 is an equidigital number, since it uses as much as digits as its factorization.

40805441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 40805441 is about 6387.9136656658. The cubic root of 40805441 is about 344.2754267276.

The spelling of 40805441 in words is "forty million, eight hundred five thousand, four hundred forty-one".