19660441 has 2 divisors, whose sum is σ = 19660442. Its totient is φ = 19660440.

The previous prime is 19660411. The next prime is 19660447. The reversal of 19660441 is 14406691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19395216 + 265225 = 4404^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 19660441 - 2⁹ = 19659929 is a prime.

It is not a weakly prime, because it can be changed into another prime (19660447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9830220 + 9830221.

It is an arithmetic number, because the mean of its divisors is an integer number (9830221).

Almost surely, 2^19660441 is an apocalyptic number.

It is an amenable number.

19660441 is a deficient number, since it is larger than the sum of its proper divisors (1).

19660441 is an equidigital number, since it uses as much as digits as its factorization.

19660441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 19660441 is about 4434.0095850144. The cubic root of 19660441 is about 269.8968101331.

The spelling of 19660441 in words is "nineteen million, six hundred sixty thousand, four hundred forty-one".