489990073 has 2 divisors, whose sum is σ = 489990074. Its totient is φ = 489990072.

The previous prime is 489990071. The next prime is 489990101. The reversal of 489990073 is 370099984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402885184 + 87104889 = 20072^2 + 9333^2 .

It is a cyclic number.

It is not a de Polignac number, because 489990073 - 2¹ = 489990071 is a prime.

Together with 489990071, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 489989999 and 489990026.

It is not a weakly prime, because it can be changed into another prime (489990071) 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, 244995036 + 244995037.

It is an arithmetic number, because the mean of its divisors is an integer number (244995037).

Almost surely, 2^489990073 is an apocalyptic number.

It is an amenable number.

489990073 is a deficient number, since it is larger than the sum of its proper divisors (1).

489990073 is an equidigital number, since it uses as much as digits as its factorization.

489990073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 489990073 is about 22135.7193919692. The cubic root of 489990073 is about 788.3681923399.

The spelling of 489990073 in words is "four hundred eighty-nine million, nine hundred ninety thousand, seventy-three".