41471981 has 2 divisors, whose sum is σ = 41471982. Its totient is φ = 41471980.

The previous prime is 41471939. The next prime is 41472043. The reversal of 41471981 is 18917414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41396356 + 75625 = 6434^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 41471981 - 2¹⁴ = 41455597 is a prime.

It is a super-2 number, since 2×41471981² = 3439850416128722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41471581) 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, 20735990 + 20735991.

It is an arithmetic number, because the mean of its divisors is an integer number (20735991).

Almost surely, 2^41471981 is an apocalyptic number.

It is an amenable number.

41471981 is a deficient number, since it is larger than the sum of its proper divisors (1).

41471981 is an equidigital number, since it uses as much as digits as its factorization.

41471981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 35.

The square root of 41471981 is about 6439.8743000155. The cubic root of 41471981 is about 346.1398440135.

The spelling of 41471981 in words is "forty-one million, four hundred seventy-one thousand, nine hundred eighty-one".