41778943 has 2 divisors, whose sum is σ = 41778944. Its totient is φ = 41778942.

The previous prime is 41778931. The next prime is 41778949. The reversal of 41778943 is 34987714.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41778943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41778943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41778949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20889471 + 20889472.

It is an arithmetic number, because the mean of its divisors is an integer number (20889472).

Almost surely, 2^41778943 is an apocalyptic number.

41778943 is a deficient number, since it is larger than the sum of its proper divisors (1).

41778943 is an equidigital number, since it uses as much as digits as its factorization.

41778943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 41778943 is about 6463.6632802150. The cubic root of 41778943 is about 346.9917501437.

The spelling of 41778943 in words is "forty-one million, seven hundred seventy-eight thousand, nine hundred forty-three".