489609079 has 2 divisors, whose sum is σ = 489609080. Its totient is φ = 489609078.

The previous prime is 489609077. The next prime is 489609091. The reversal of 489609079 is 970906984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489609079 - 2¹ = 489609077 is a prime.

Together with 489609077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489609077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244804539 + 244804540.

It is an arithmetic number, because the mean of its divisors is an integer number (244804540).

Almost surely, 2^489609079 is an apocalyptic number.

489609079 is a deficient number, since it is larger than the sum of its proper divisors (1).

489609079 is an equidigital number, since it uses as much as digits as its factorization.

489609079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 489609079 is about 22127.1118540129. Note that the first 3 decimals coincide. The cubic root of 489609079 is about 788.1638062711.

The spelling of 489609079 in words is "four hundred eighty-nine million, six hundred nine thousand, seventy-nine".