41839781 has 2 divisors, whose sum is σ = 41839782. Its totient is φ = 41839780.

The previous prime is 41839757. The next prime is 41839789. The reversal of 41839781 is 18793814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41809156 + 30625 = 6466^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 41839781 - 2¹⁸ = 41577637 is a prime.

It is a super-2 number, since 2×41839781² = 3501134548255922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41839789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20919890 + 20919891.

It is an arithmetic number, because the mean of its divisors is an integer number (20919891).

Almost surely, 2^41839781 is an apocalyptic number.

It is an amenable number.

41839781 is a deficient number, since it is larger than the sum of its proper divisors (1).

41839781 is an equidigital number, since it uses as much as digits as its factorization.

41839781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 41839781 is about 6468.3677230040. The cubic root of 41839781 is about 347.1600968754.

The spelling of 41839781 in words is "forty-one million, eight hundred thirty-nine thousand, seven hundred eighty-one".