489920213 has 2 divisors, whose sum is σ = 489920214. Its totient is φ = 489920212.

The previous prime is 489920177. The next prime is 489920231. The reversal of 489920213 is 312029984.

Together with next prime (489920231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292854769 + 197065444 = 17113^2 + 14038^2 .

It is a cyclic number.

It is not a de Polignac number, because 489920213 - 2¹⁴ = 489903829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489920243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244960106 + 244960107.

It is an arithmetic number, because the mean of its divisors is an integer number (244960107).

Almost surely, 2^489920213 is an apocalyptic number.

It is an amenable number.

489920213 is a deficient number, since it is larger than the sum of its proper divisors (1).

489920213 is an equidigital number, since it uses as much as digits as its factorization.

489920213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 489920213 is about 22134.1413431829. The cubic root of 489920213 is about 788.3307235403.

The spelling of 489920213 in words is "four hundred eighty-nine million, nine hundred twenty thousand, two hundred thirteen".