40434243433 has 2 divisors, whose sum is σ = 40434243434. Its totient is φ = 40434243432.

The previous prime is 40434243391. The next prime is 40434243439. The reversal of 40434243433 is 33434243404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39645588544 + 788654889 = 199112^2 + 28083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40434243433 is a prime.

It is not a weakly prime, because it can be changed into another prime (40434243439) 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, 20217121716 + 20217121717.

It is an arithmetic number, because the mean of its divisors is an integer number (20217121717).

Almost surely, 2^40434243433 is an apocalyptic number.

It is an amenable number.

40434243433 is a deficient number, since it is larger than the sum of its proper divisors (1).

40434243433 is an equidigital number, since it uses as much as digits as its factorization.

40434243433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 34.

Adding to 40434243433 its reverse (33434243404), we get a palindrome (73868486837).

The spelling of 40434243433 in words is "forty billion, four hundred thirty-four million, two hundred forty-three thousand, four hundred thirty-three".