489923773 has 2 divisors, whose sum is σ = 489923774. Its totient is φ = 489923772.

The previous prime is 489923747. The next prime is 489923807. The reversal of 489923773 is 377329984.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395095129 + 94828644 = 19877^2 + 9738^2 .

It is a cyclic number.

It is not a de Polignac number, because 489923773 - 2⁹ = 489923261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489923773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489923743) 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, 244961886 + 244961887.

It is an arithmetic number, because the mean of its divisors is an integer number (244961887).

Almost surely, 2^489923773 is an apocalyptic number.

It is an amenable number.

489923773 is a deficient number, since it is larger than the sum of its proper divisors (1).

489923773 is an equidigital number, since it uses as much as digits as its factorization.

489923773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 52.

The square root of 489923773 is about 22134.2217617878. The cubic root of 489923773 is about 788.3326330013.

The spelling of 489923773 in words is "four hundred eighty-nine million, nine hundred twenty-three thousand, seven hundred seventy-three".