489444479 has 2 divisors, whose sum is σ = 489444480. Its totient is φ = 489444478.

The previous prime is 489444469. The next prime is 489444491. The reversal of 489444479 is 974444984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489444479 - 2⁴ = 489444463 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489444479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489444469) 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, 244722239 + 244722240.

It is an arithmetic number, because the mean of its divisors is an integer number (244722240).

Almost surely, 2^489444479 is an apocalyptic number.

489444479 is a deficient number, since it is larger than the sum of its proper divisors (1).

489444479 is an equidigital number, since it uses as much as digits as its factorization.

489444479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 53.

The square root of 489444479 is about 22123.3921223668. The cubic root of 489444479 is about 788.0754730077.

The spelling of 489444479 in words is "four hundred eighty-nine million, four hundred forty-four thousand, four hundred seventy-nine".