489129481 has 2 divisors, whose sum is σ = 489129482. Its totient is φ = 489129480.

The previous prime is 489129469. The next prime is 489129499. The reversal of 489129481 is 184921984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476767225 + 12362256 = 21835^2 + 3516^2 .

It is a cyclic number.

It is not a de Polignac number, because 489129481 - 2⁷ = 489129353 is a prime.

It is a super-2 number, since 2×489129481² = 478495298366658722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (489129881) 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, 244564740 + 244564741.

It is an arithmetic number, because the mean of its divisors is an integer number (244564741).

Almost surely, 2^489129481 is an apocalyptic number.

It is an amenable number.

489129481 is a deficient number, since it is larger than the sum of its proper divisors (1).

489129481 is an equidigital number, since it uses as much as digits as its factorization.

489129481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 46.

The square root of 489129481 is about 22116.2718603294. The cubic root of 489129481 is about 787.9063728119.

The spelling of 489129481 in words is "four hundred eighty-nine million, one hundred twenty-nine thousand, four hundred eighty-one".