489722729 has 2 divisors, whose sum is σ = 489722730. Its totient is φ = 489722728.

The previous prime is 489722687. The next prime is 489722731. The reversal of 489722729 is 927227984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288082729 + 201640000 = 16973^2 + 14200^2 .

It is a cyclic number.

It is not a de Polignac number, because 489722729 - 2¹² = 489718633 is a prime.

Together with 489722731, 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 (489722749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244861364 + 244861365.

It is an arithmetic number, because the mean of its divisors is an integer number (244861365).

Almost surely, 2^489722729 is an apocalyptic number.

It is an amenable number.

489722729 is a deficient number, since it is larger than the sum of its proper divisors (1).

489722729 is an equidigital number, since it uses as much as digits as its factorization.

489722729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 489722729 is about 22129.6798214525. The cubic root of 489722729 is about 788.2247854553.

The spelling of 489722729 in words is "four hundred eighty-nine million, seven hundred twenty-two thousand, seven hundred twenty-nine".