41779721 has 2 divisors, whose sum is σ = 41779722. Its totient is φ = 41779720.

The previous prime is 41779711. The next prime is 41779769. The reversal of 41779721 is 12797714.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40819321 + 960400 = 6389^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 41779721 - 2¹⁰ = 41778697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41779711) 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, 20889860 + 20889861.

It is an arithmetic number, because the mean of its divisors is an integer number (20889861).

Almost surely, 2^41779721 is an apocalyptic number.

It is an amenable number.

41779721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41779721 is an equidigital number, since it uses as much as digits as its factorization.

41779721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 38.

The square root of 41779721 is about 6463.7234625253. The cubic root of 41779721 is about 346.9939040031.

The spelling of 41779721 in words is "forty-one million, seven hundred seventy-nine thousand, seven hundred twenty-one".