489581023 has 2 divisors, whose sum is σ = 489581024. Its totient is φ = 489581022.

The previous prime is 489580991. The next prime is 489581083. The reversal of 489581023 is 320185984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489581023 - 2⁵ = 489580991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489581083) 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, 244790511 + 244790512.

It is an arithmetic number, because the mean of its divisors is an integer number (244790512).

Almost surely, 2^489581023 is an apocalyptic number.

489581023 is a deficient number, since it is larger than the sum of its proper divisors (1).

489581023 is an equidigital number, since it uses as much as digits as its factorization.

489581023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 489581023 is about 22126.4778715457. The cubic root of 489581023 is about 788.1487513037.

The spelling of 489581023 in words is "four hundred eighty-nine million, five hundred eighty-one thousand, twenty-three".