489353947 has 2 divisors, whose sum is σ = 489353948. Its totient is φ = 489353946.

The previous prime is 489353933. The next prime is 489354001. The reversal of 489353947 is 749353984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489353947 - 2¹⁵ = 489321179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 489353894 and 489353903.

It is not a weakly prime, because it can be changed into another prime (489353747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244676973 + 244676974.

It is an arithmetic number, because the mean of its divisors is an integer number (244676974).

Almost surely, 2^489353947 is an apocalyptic number.

489353947 is a deficient number, since it is larger than the sum of its proper divisors (1).

489353947 is an equidigital number, since it uses as much as digits as its factorization.

489353947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The square root of 489353947 is about 22121.3459581464. The cubic root of 489353947 is about 788.0268801974.

The spelling of 489353947 in words is "four hundred eighty-nine million, three hundred fifty-three thousand, nine hundred forty-seven".