40340317 has 2 divisors, whose sum is σ = 40340318. Its totient is φ = 40340316.

The previous prime is 40340297. The next prime is 40340329. The reversal of 40340317 is 71304304.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25060036 + 15280281 = 5006^2 + 3909^2 .

It is a cyclic number.

It is not a de Polignac number, because 40340317 - 2¹⁵ = 40307549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40340347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170158 + 20170159.

It is an arithmetic number, because the mean of its divisors is an integer number (20170159).

Almost surely, 2^40340317 is an apocalyptic number.

It is an amenable number.

40340317 is a deficient number, since it is larger than the sum of its proper divisors (1).

40340317 is an equidigital number, since it uses as much as digits as its factorization.

40340317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 40340317 is about 6351.4027584464. The cubic root of 40340317 is about 342.9623414869.

The spelling of 40340317 in words is "forty million, three hundred forty thousand, three hundred seventeen".