41661943 has 2 divisors, whose sum is σ = 41661944. Its totient is φ = 41661942.

The previous prime is 41661941. The next prime is 41661979. The reversal of 41661943 is 34916614.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41661943 - 2¹ = 41661941 is a prime.

Together with 41661941, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 41661899 and 41661908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41661941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20830971 + 20830972.

It is an arithmetic number, because the mean of its divisors is an integer number (20830972).

Almost surely, 2^41661943 is an apocalyptic number.

41661943 is a deficient number, since it is larger than the sum of its proper divisors (1).

41661943 is an equidigital number, since it uses as much as digits as its factorization.

41661943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 41661943 is about 6454.6063396616. The cubic root of 41661943 is about 346.6675358501.

The spelling of 41661943 in words is "forty-one million, six hundred sixty-one thousand, nine hundred forty-three".