40395559 has 2 divisors, whose sum is σ = 40395560. Its totient is φ = 40395558.

The previous prime is 40395529. The next prime is 40395581. The reversal of 40395559 is 95559304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40395559 - 2⁷ = 40395431 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40395529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20197779 + 20197780.

It is an arithmetic number, because the mean of its divisors is an integer number (20197780).

Almost surely, 2^40395559 is an apocalyptic number.

40395559 is a deficient number, since it is larger than the sum of its proper divisors (1).

40395559 is an equidigital number, since it uses as much as digits as its factorization.

40395559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 40395559 is about 6355.7500737521. The cubic root of 40395559 is about 343.1188208725.

The spelling of 40395559 in words is "forty million, three hundred ninety-five thousand, five hundred fifty-nine".