489589819 has 2 divisors, whose sum is σ = 489589820. Its totient is φ = 489589818.

The previous prime is 489589669. The next prime is 489589823. The reversal of 489589819 is 918985984.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 489589819 - 2²¹ = 487492667 is a prime.

It is a super-2 number, since 2×489589819² = 479396381736905522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (489589829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244794909 + 244794910.

It is an arithmetic number, because the mean of its divisors is an integer number (244794910).

Almost surely, 2^489589819 is an apocalyptic number.

489589819 is a deficient number, since it is larger than the sum of its proper divisors (1).

489589819 is an equidigital number, since it uses as much as digits as its factorization.

489589819 is an evil number, because the sum of its binary digits is even.

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

The square root of 489589819 is about 22126.6766370370. The cubic root of 489589819 is about 788.1534713361.

The spelling of 489589819 in words is "four hundred eighty-nine million, five hundred eighty-nine thousand, eight hundred nineteen".