489999793 has 2 divisors, whose sum is σ = 489999794. Its totient is φ = 489999792.

The previous prime is 489999677. The next prime is 489999803. The reversal of 489999793 is 397999984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353740864 + 136258929 = 18808^2 + 11673^2 .

It is a cyclic number.

It is not a de Polignac number, because 489999793 - 2⁹ = 489999281 is a prime.

It is not a weakly prime, because it can be changed into another prime (489999193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244999896 + 244999897.

It is an arithmetic number, because the mean of its divisors is an integer number (244999897).

Almost surely, 2^489999793 is an apocalyptic number.

It is an amenable number.

489999793 is a deficient number, since it is larger than the sum of its proper divisors (1).

489999793 is an equidigital number, since it uses as much as digits as its factorization.

489999793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39680928, while the sum is 67.

The square root of 489999793 is about 22135.9389455248. The cubic root of 489999793 is about 788.3734052946.

The spelling of 489999793 in words is "four hundred eighty-nine million, nine hundred ninety-nine thousand, seven hundred ninety-three".