41921687 has 2 divisors, whose sum is σ = 41921688. Its totient is φ = 41921686.

The previous prime is 41921681. The next prime is 41921707. The reversal of 41921687 is 78612914.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41921687 - 2⁶ = 41921623 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41921687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41921681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20960843 + 20960844.

It is an arithmetic number, because the mean of its divisors is an integer number (20960844).

Almost surely, 2^41921687 is an apocalyptic number.

41921687 is a deficient number, since it is larger than the sum of its proper divisors (1).

41921687 is an equidigital number, since it uses as much as digits as its factorization.

41921687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 41921687 is about 6474.6959001949. The cubic root of 41921687 is about 347.3864839789.

The spelling of 41921687 in words is "forty-one million, nine hundred twenty-one thousand, six hundred eighty-seven".