489461729 has 2 divisors, whose sum is σ = 489461730. Its totient is φ = 489461728.

The previous prime is 489461711. The next prime is 489461737. The reversal of 489461729 is 927164984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248125504 + 241336225 = 15752^2 + 15535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489461729 is a prime.

It is a super-3 number, since 3×489461729³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (489461029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244730864 + 244730865.

It is an arithmetic number, because the mean of its divisors is an integer number (244730865).

Almost surely, 2^489461729 is an apocalyptic number.

It is an amenable number.

489461729 is a deficient number, since it is larger than the sum of its proper divisors (1).

489461729 is an equidigital number, since it uses as much as digits as its factorization.

489461729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 489461729 is about 22123.7819777722. The cubic root of 489461729 is about 788.0847312196.

The spelling of 489461729 in words is "four hundred eighty-nine million, four hundred sixty-one thousand, seven hundred twenty-nine".