489428231 has 2 divisors, whose sum is σ = 489428232. Its totient is φ = 489428230.

The previous prime is 489428227. The next prime is 489428237. The reversal of 489428231 is 132824984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489428231 - 2² = 489428227 is a prime.

It is a super-2 number, since 2×489428231² = 479079986599578722, which contains 22 as substring.

It is equal to p_25827719 and since 489428231 and 25827719 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489428237) 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, 244714115 + 244714116.

It is an arithmetic number, because the mean of its divisors is an integer number (244714116).

Almost surely, 2^489428231 is an apocalyptic number.

489428231 is a deficient number, since it is larger than the sum of its proper divisors (1).

489428231 is an equidigital number, since it uses as much as digits as its factorization.

489428231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 41.

The square root of 489428231 is about 22123.0249061922. The cubic root of 489428231 is about 788.0667523781.

The spelling of 489428231 in words is "four hundred eighty-nine million, four hundred twenty-eight thousand, two hundred thirty-one".