488589991 has 2 divisors, whose sum is σ = 488589992. Its totient is φ = 488589990.

The previous prime is 488589961. The next prime is 488590001. The reversal of 488589991 is 199985884.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 488589991 - 2¹¹ = 488587943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (488589901) 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, 244294995 + 244294996.

It is an arithmetic number, because the mean of its divisors is an integer number (244294996).

Almost surely, 2^488589991 is an apocalyptic number.

488589991 is a deficient number, since it is larger than the sum of its proper divisors (1).

488589991 is an equidigital number, since it uses as much as digits as its factorization.

488589991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 61.

The square root of 488589991 is about 22104.0718194635. The cubic root of 488589991 is about 787.6165899774.

The spelling of 488589991 in words is "four hundred eighty-eight million, five hundred eighty-nine thousand, nine hundred ninety-one".