41609889869 has 2 divisors, whose sum is σ = 41609889870. Its totient is φ = 41609889868.

The previous prime is 41609889863. The next prime is 41609889913. The reversal of 41609889869 is 96898890614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24823578025 + 16786311844 = 157555^2 + 129562^2 .

It is a cyclic number.

It is not a de Polignac number, because 41609889869 - 2⁸ = 41609889613 is a prime.

It is a super-2 number, since 2×41609889869² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 41609889799 and 41609889808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41609889863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20804944934 + 20804944935.

It is an arithmetic number, because the mean of its divisors is an integer number (20804944935).

Almost surely, 2^41609889869 is an apocalyptic number.

It is an amenable number.

41609889869 is a deficient number, since it is larger than the sum of its proper divisors (1).

41609889869 is an equidigital number, since it uses as much as digits as its factorization.

41609889869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53747712, while the sum is 68.

The spelling of 41609889869 in words is "forty-one billion, six hundred nine million, eight hundred eighty-nine thousand, eight hundred sixty-nine".