40569317 has 2 divisors, whose sum is σ = 40569318. Its totient is φ = 40569316.

The previous prime is 40569311. The next prime is 40569379. The reversal of 40569317 is 71396504.

40569317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27363361 + 13205956 = 5231^2 + 3634^2 .

It is a cyclic number.

It is not a de Polignac number, because 40569317 - 2²⁴ = 23792101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40569311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20284658 + 20284659.

It is an arithmetic number, because the mean of its divisors is an integer number (20284659).

Almost surely, 2^40569317 is an apocalyptic number.

It is an amenable number.

40569317 is a deficient number, since it is larger than the sum of its proper divisors (1).

40569317 is an equidigital number, since it uses as much as digits as its factorization.

40569317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 40569317 is about 6369.4047602582. The cubic root of 40569317 is about 343.6100824727.

The spelling of 40569317 in words is "forty million, five hundred sixty-nine thousand, three hundred seventeen".