40666271 has 2 divisors, whose sum is σ = 40666272. Its totient is φ = 40666270.

The previous prime is 40666259. The next prime is 40666273. The reversal of 40666271 is 17266604.

40666271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40666271 is a prime.

It is a Sophie Germain prime.

Together with 40666273, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2471675 and since 40666271 and 2471675 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40666273) 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, 20333135 + 20333136.

It is an arithmetic number, because the mean of its divisors is an integer number (20333136).

Almost surely, 2^40666271 is an apocalyptic number.

40666271 is a deficient number, since it is larger than the sum of its proper divisors (1).

40666271 is an equidigital number, since it uses as much as digits as its factorization.

40666271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 40666271 is about 6377.0111337522. The cubic root of 40666271 is about 343.8835885848.

The spelling of 40666271 in words is "forty million, six hundred sixty-six thousand, two hundred seventy-one".