489980369 has 2 divisors, whose sum is σ = 489980370. Its totient is φ = 489980368.

The previous prime is 489980329. The next prime is 489980383. The reversal of 489980369 is 963089984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484528144 + 5452225 = 22012^2 + 2335^2 .

It is a cyclic number.

It is not a de Polignac number, because 489980369 - 2¹² = 489976273 is a prime.

It is a super-2 number, since 2×489980369² = 480161524010752322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (489980329) 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, 244990184 + 244990185.

It is an arithmetic number, because the mean of its divisors is an integer number (244990185).

Almost surely, 2^489980369 is an apocalyptic number.

It is an amenable number.

489980369 is a deficient number, since it is larger than the sum of its proper divisors (1).

489980369 is an equidigital number, since it uses as much as digits as its factorization.

489980369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 489980369 is about 22135.5001976463. The cubic root of 489980369 is about 788.3629878975.

The spelling of 489980369 in words is "four hundred eighty-nine million, nine hundred eighty thousand, three hundred sixty-nine".