489223171 has 2 divisors, whose sum is σ = 489223172. Its totient is φ = 489223170.

The previous prime is 489223099. The next prime is 489223181. The reversal of 489223171 is 171322984.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 489223171 - 2⁷ = 489223043 is a prime.

It is a super-2 number, since 2×489223171² = 478678622086590482, 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 489223171.

It is not a weakly prime, because it can be changed into another prime (489223181) 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, 244611585 + 244611586.

It is an arithmetic number, because the mean of its divisors is an integer number (244611586).

Almost surely, 2^489223171 is an apocalyptic number.

489223171 is a deficient number, since it is larger than the sum of its proper divisors (1).

489223171 is an equidigital number, since it uses as much as digits as its factorization.

489223171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 489223171 is about 22118.3898826293. The cubic root of 489223171 is about 787.9566759444.

The spelling of 489223171 in words is "four hundred eighty-nine million, two hundred twenty-three thousand, one hundred seventy-one".