489079121 has 2 divisors, whose sum is σ = 489079122. Its totient is φ = 489079120.

The previous prime is 489079117. The next prime is 489079139. The reversal of 489079121 is 121970984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268140625 + 220938496 = 16375^2 + 14864^2 .

It is a cyclic number.

It is not a de Polignac number, because 489079121 - 2² = 489079117 is a prime.

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 (489079111) 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, 244539560 + 244539561.

It is an arithmetic number, because the mean of its divisors is an integer number (244539561).

Almost surely, 2^489079121 is an apocalyptic number.

It is an amenable number.

489079121 is a deficient number, since it is larger than the sum of its proper divisors (1).

489079121 is an equidigital number, since it uses as much as digits as its factorization.

489079121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 489079121 is about 22115.1333027861. The cubic root of 489079121 is about 787.8793313513.

The spelling of 489079121 in words is "four hundred eighty-nine million, seventy-nine thousand, one hundred twenty-one".