41405989 has 2 divisors, whose sum is σ = 41405990. Its totient is φ = 41405988.

The previous prime is 41405981. The next prime is 41406019. The reversal of 41405989 is 98950414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41383489 + 22500 = 6433^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 41405989 - 2³ = 41405981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41405981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20702994 + 20702995.

It is an arithmetic number, because the mean of its divisors is an integer number (20702995).

Almost surely, 2^41405989 is an apocalyptic number.

It is an amenable number.

41405989 is a deficient number, since it is larger than the sum of its proper divisors (1).

41405989 is an equidigital number, since it uses as much as digits as its factorization.

41405989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 41405989 is about 6434.7485576361. The cubic root of 41405989 is about 345.9561490085.

The spelling of 41405989 in words is "forty-one million, four hundred five thousand, nine hundred eighty-nine".