40065317 has 2 divisors, whose sum is σ = 40065318. Its totient is φ = 40065316.

The previous prime is 40065257. The next prime is 40065341. The reversal of 40065317 is 71356004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28238596 + 11826721 = 5314^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 40065317 - 2¹² = 40061221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40065367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20032658 + 20032659.

It is an arithmetic number, because the mean of its divisors is an integer number (20032659).

Almost surely, 2^40065317 is an apocalyptic number.

It is an amenable number.

40065317 is a deficient number, since it is larger than the sum of its proper divisors (1).

40065317 is an equidigital number, since it uses as much as digits as its factorization.

40065317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 40065317 is about 6329.7169762952. The cubic root of 40065317 is about 342.1812389352.

The spelling of 40065317 in words is "forty million, sixty-five thousand, three hundred seventeen".