41002991 has 2 divisors, whose sum is σ = 41002992. Its totient is φ = 41002990.

The previous prime is 41002981. The next prime is 41003003. The reversal of 41002991 is 19920014.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41002991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41002991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41002981) 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, 20501495 + 20501496.

It is an arithmetic number, because the mean of its divisors is an integer number (20501496).

Almost surely, 2^41002991 is an apocalyptic number.

41002991 is a deficient number, since it is larger than the sum of its proper divisors (1).

41002991 is an equidigital number, since it uses as much as digits as its factorization.

41002991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 41002991 is about 6403.3577910343. The cubic root of 41002991 is about 344.8301088895.

The spelling of 41002991 in words is "forty-one million, two thousand, nine hundred ninety-one".