489017819 has 2 divisors, whose sum is σ = 489017820. Its totient is φ = 489017818.

The previous prime is 489017761. The next prime is 489017827. The reversal of 489017819 is 918710984.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489017819 is a prime.

It is a super-2 number, since 2×489017819² = 478276854599033522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (489017849) 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, 244508909 + 244508910.

It is an arithmetic number, because the mean of its divisors is an integer number (244508910).

Almost surely, 2^489017819 is an apocalyptic number.

489017819 is a deficient number, since it is larger than the sum of its proper divisors (1).

489017819 is an equidigital number, since it uses as much as digits as its factorization.

489017819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 489017819 is about 22113.7472853427. The cubic root of 489017819 is about 787.8464119354.

The spelling of 489017819 in words is "four hundred eighty-nine million, seventeen thousand, eight hundred nineteen".