489602891 has 2 divisors, whose sum is σ = 489602892. Its totient is φ = 489602890.

The previous prime is 489602843. The next prime is 489602899. The reversal of 489602891 is 198206984.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489602891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (489602899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244801445 + 244801446.

It is an arithmetic number, because the mean of its divisors is an integer number (244801446).

Almost surely, 2^489602891 is an apocalyptic number.

489602891 is a deficient number, since it is larger than the sum of its proper divisors (1).

489602891 is an equidigital number, since it uses as much as digits as its factorization.

489602891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 489602891 is about 22126.9720251100. The cubic root of 489602891 is about 788.1604858138.

The spelling of 489602891 in words is "four hundred eighty-nine million, six hundred two thousand, eight hundred ninety-one".