489376813 has 2 divisors, whose sum is σ = 489376814. Its totient is φ = 489376812.

The previous prime is 489376799. The next prime is 489376817. The reversal of 489376813 is 318673984.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245454889 + 243921924 = 15667^2 + 15618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489376813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489376817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244688406 + 244688407.

It is an arithmetic number, because the mean of its divisors is an integer number (244688407).

Almost surely, 2^489376813 is an apocalyptic number.

It is an amenable number.

489376813 is a deficient number, since it is larger than the sum of its proper divisors (1).

489376813 is an equidigital number, since it uses as much as digits as its factorization.

489376813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 489376813 is about 22121.8627832287. The cubic root of 489376813 is about 788.0391540278.

The spelling of 489376813 in words is "four hundred eighty-nine million, three hundred seventy-six thousand, eight hundred thirteen".