489048991 has 2 divisors, whose sum is σ = 489048992. Its totient is φ = 489048990.

The previous prime is 489048929. The next prime is 489049003. The reversal of 489048991 is 199840984.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 489048991 - 2⁷ = 489048863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489048191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244524495 + 244524496.

It is an arithmetic number, because the mean of its divisors is an integer number (244524496).

Almost surely, 2^489048991 is an apocalyptic number.

489048991 is a deficient number, since it is larger than the sum of its proper divisors (1).

489048991 is an equidigital number, since it uses as much as digits as its factorization.

489048991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 489048991 is about 22114.4520845532. The cubic root of 489048991 is about 787.8631517662.

The spelling of 489048991 in words is "four hundred eighty-nine million, forty-eight thousand, nine hundred ninety-one".