40000217 has 2 divisors, whose sum is σ = 40000218. Its totient is φ = 40000216.

The previous prime is 40000211. The next prime is 40000223. The reversal of 40000217 is 71200004.

It is a happy number.

40000217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (40000211) and next prime (40000223).

It can be written as a sum of positive squares in only one way, i.e., 29116816 + 10883401 = 5396^2 + 3299^2 .

It is a cyclic number.

It is not a de Polignac number, because 40000217 - 2¹⁴ = 39983833 is a prime.

It is not a weakly prime, because it can be changed into another prime (40000211) 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, 20000108 + 20000109.

It is an arithmetic number, because the mean of its divisors is an integer number (20000109).

Almost surely, 2^40000217 is an apocalyptic number.

It is an amenable number.

40000217 is a deficient number, since it is larger than the sum of its proper divisors (1).

40000217 is an equidigital number, since it uses as much as digits as its factorization.

40000217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 40000217 is about 6324.5724756698. The cubic root of 40000217 is about 341.9958077755.

The spelling of 40000217 in words is "forty million, two hundred seventeen", and thus it is an aban number.