489031811 has 2 divisors, whose sum is σ = 489031812. Its totient is φ = 489031810.

The previous prime is 489031801. The next prime is 489031813. The reversal of 489031811 is 118130984.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 489031811 - 2¹⁴ = 489015427 is a prime.

It is a super-2 number, since 2×489031811² = 478304224339879442, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 489031813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (489031813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244515905 + 244515906.

It is an arithmetic number, because the mean of its divisors is an integer number (244515906).

Almost surely, 2^489031811 is an apocalyptic number.

489031811 is a deficient number, since it is larger than the sum of its proper divisors (1).

489031811 is an equidigital number, since it uses as much as digits as its factorization.

489031811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 489031811 is about 22114.0636473716. The cubic root of 489031811 is about 787.8539259369.

The spelling of 489031811 in words is "four hundred eighty-nine million, thirty-one thousand, eight hundred eleven".