40336243 has 2 divisors, whose sum is σ = 40336244. Its totient is φ = 40336242.

The previous prime is 40336229. The next prime is 40336249. The reversal of 40336243 is 34263304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40336243 - 2⁹ = 40335731 is a prime.

It is not a weakly prime, because it can be changed into another prime (40336249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20168121 + 20168122.

It is an arithmetic number, because the mean of its divisors is an integer number (20168122).

Almost surely, 2^40336243 is an apocalyptic number.

40336243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40336243 is an equidigital number, since it uses as much as digits as its factorization.

40336243 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 25.

The square root of 40336243 is about 6351.0820337955. The cubic root of 40336243 is about 342.9507957536.

Adding to 40336243 its reverse (34263304), we get a palindrome (74599547).

The spelling of 40336243 in words is "forty million, three hundred thirty-six thousand, two hundred forty-three".