489705971 has 2 divisors, whose sum is σ = 489705972. Its totient is φ = 489705970.

The previous prime is 489705947. The next prime is 489706001. The reversal of 489705971 is 179507984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489705971 - 2⁶ = 489705907 is a prime.

It is not a weakly prime, because it can be changed into another prime (489705901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244852985 + 244852986.

It is an arithmetic number, because the mean of its divisors is an integer number (244852986).

Almost surely, 2^489705971 is an apocalyptic number.

489705971 is a deficient number, since it is larger than the sum of its proper divisors (1).

489705971 is an equidigital number, since it uses as much as digits as its factorization.

489705971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 489705971 is about 22129.3011864361. The cubic root of 489705971 is about 788.2157945026.

The spelling of 489705971 in words is "four hundred eighty-nine million, seven hundred five thousand, nine hundred seventy-one".