41394781 has 2 divisors, whose sum is σ = 41394782. Its totient is φ = 41394780.

The previous prime is 41394763. The next prime is 41394797. The reversal of 41394781 is 18749314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26687556 + 14707225 = 5166^2 + 3835^2 .

It is a cyclic number.

It is not a de Polignac number, because 41394781 - 2¹¹ = 41392733 is a prime.

It is a super-3 number, since 3×41394781³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 41394781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41397781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20697390 + 20697391.

It is an arithmetic number, because the mean of its divisors is an integer number (20697391).

Almost surely, 2^41394781 is an apocalyptic number.

It is an amenable number.

41394781 is a deficient number, since it is larger than the sum of its proper divisors (1).

41394781 is an equidigital number, since it uses as much as digits as its factorization.

41394781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 41394781 is about 6433.8776021929. The cubic root of 41394781 is about 345.9249310895.

The spelling of 41394781 in words is "forty-one million, three hundred ninety-four thousand, seven hundred eighty-one".