489785671 has 2 divisors, whose sum is σ = 489785672. Its totient is φ = 489785670.

The previous prime is 489785641. The next prime is 489785683. The reversal of 489785671 is 176587984.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 489785671 - 2⁹ = 489785159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489785641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244892835 + 244892836.

It is an arithmetic number, because the mean of its divisors is an integer number (244892836).

Almost surely, 2^489785671 is an apocalyptic number.

489785671 is a deficient number, since it is larger than the sum of its proper divisors (1).

489785671 is an equidigital number, since it uses as much as digits as its factorization.

489785671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 55.

The square root of 489785671 is about 22131.1018930373. The cubic root of 489785671 is about 788.2585530794.

The spelling of 489785671 in words is "four hundred eighty-nine million, seven hundred eighty-five thousand, six hundred seventy-one".