41640889 has 2 divisors, whose sum is σ = 41640890. Its totient is φ = 41640888.

The previous prime is 41640883. The next prime is 41640917. The reversal of 41640889 is 98804614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 783225 = 6392^2 + 885^2 .

It is a cyclic number.

It is not a de Polignac number, because 41640889 - 2⁹ = 41640377 is a prime.

It is not a weakly prime, because it can be changed into another prime (41640883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20820444 + 20820445.

It is an arithmetic number, because the mean of its divisors is an integer number (20820445).

Almost surely, 2^41640889 is an apocalyptic number.

It is an amenable number.

41640889 is a deficient number, since it is larger than the sum of its proper divisors (1).

41640889 is an equidigital number, since it uses as much as digits as its factorization.

41640889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 41640889 is about 6452.9752052832. The cubic root of 41640889 is about 346.6091294836.

The spelling of 41640889 in words is "forty-one million, six hundred forty thousand, eight hundred eighty-nine".