41991671 has 2 divisors, whose sum is σ = 41991672. Its totient is φ = 41991670.

The previous prime is 41991619. The next prime is 41991731. The reversal of 41991671 is 17619914.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41991671 - 2¹⁴ = 41975287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41991611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20995835 + 20995836.

It is an arithmetic number, because the mean of its divisors is an integer number (20995836).

Almost surely, 2^41991671 is an apocalyptic number.

41991671 is a deficient number, since it is larger than the sum of its proper divisors (1).

41991671 is an equidigital number, since it uses as much as digits as its factorization.

41991671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 38.

The square root of 41991671 is about 6480.0980702455. The cubic root of 41991671 is about 347.5796853300.

The spelling of 41991671 in words is "forty-one million, nine hundred ninety-one thousand, six hundred seventy-one".