489079819 has 2 divisors, whose sum is σ = 489079820. Its totient is φ = 489079818.

The previous prime is 489079763. The next prime is 489079841. The reversal of 489079819 is 918970984.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489079819 is a prime.

It is a super-2 number, since 2×489079819² = 478398138706145522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 489079819.

It is not a weakly prime, because it can be changed into another prime (489079859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244539909 + 244539910.

It is an arithmetic number, because the mean of its divisors is an integer number (244539910).

Almost surely, 2^489079819 is an apocalyptic number.

489079819 is a deficient number, since it is larger than the sum of its proper divisors (1).

489079819 is an equidigital number, since it uses as much as digits as its factorization.

489079819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 489079819 is about 22115.1490838294. The cubic root of 489079819 is about 787.8797061642.

The spelling of 489079819 in words is "four hundred eighty-nine million, seventy-nine thousand, eight hundred nineteen".