489121783 has 2 divisors, whose sum is σ = 489121784. Its totient is φ = 489121782.

The previous prime is 489121781. The next prime is 489121793. The reversal of 489121783 is 387121984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489121783 - 2¹ = 489121781 is a prime.

Together with 489121781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489121781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244560891 + 244560892.

It is an arithmetic number, because the mean of its divisors is an integer number (244560892).

Almost surely, 2^489121783 is an apocalyptic number.

489121783 is a deficient number, since it is larger than the sum of its proper divisors (1).

489121783 is an equidigital number, since it uses as much as digits as its factorization.

489121783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 43.

The square root of 489121783 is about 22116.0978248876. The cubic root of 489121783 is about 787.9022393903.

The spelling of 489121783 in words is "four hundred eighty-nine million, one hundred twenty-one thousand, seven hundred eighty-three".