40663043 has 2 divisors, whose sum is σ = 40663044. Its totient is φ = 40663042.

The previous prime is 40663013. The next prime is 40663067. The reversal of 40663043 is 34036604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40663043 - 2¹⁰ = 40662019 is a prime.

It is not a weakly prime, because it can be changed into another prime (40663003) 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, 20331521 + 20331522.

It is an arithmetic number, because the mean of its divisors is an integer number (20331522).

Almost surely, 2^40663043 is an apocalyptic number.

40663043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40663043 is an equidigital number, since it uses as much as digits as its factorization.

40663043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 40663043 is about 6376.7580321038. The cubic root of 40663043 is about 343.8744894340.

Adding to 40663043 its reverse (34036604), we get a palindrome (74699647).

The spelling of 40663043 in words is "forty million, six hundred sixty-three thousand, forty-three".