38840317 has 2 divisors, whose sum is σ = 38840318. Its totient is φ = 38840316.

The previous prime is 38840311. The next prime is 38840327. The reversal of 38840317 is 71304883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24860196 + 13980121 = 4986^2 + 3739^2 .

It is a cyclic number.

It is not a de Polignac number, because 38840317 - 2¹⁹ = 38316029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38840311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19420158 + 19420159.

It is an arithmetic number, because the mean of its divisors is an integer number (19420159).

Almost surely, 2^38840317 is an apocalyptic number.

It is an amenable number.

38840317 is a deficient number, since it is larger than the sum of its proper divisors (1).

38840317 is an equidigital number, since it uses as much as digits as its factorization.

38840317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 38840317 is about 6232.2000128366. The cubic root of 38840317 is about 338.6576745801.

The spelling of 38840317 in words is "thirty-eight million, eight hundred forty thousand, three hundred seventeen".