489938771 has 4 divisors (see below), whose sum is σ = 559930032. Its totient is φ = 419947512.

The previous prime is 489938749. The next prime is 489938777. The reversal of 489938771 is 177839984.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489938771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489938777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34995620 + ... + 34995633.

It is an arithmetic number, because the mean of its divisors is an integer number (139982508).

Almost surely, 2^489938771 is an apocalyptic number.

489938771 is a deficient number, since it is larger than the sum of its proper divisors (69991261).

489938771 is an equidigital number, since it uses as much as digits as its factorization.

489938771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69991260.

The product of its digits is 3048192, while the sum is 56.

The square root of 489938771 is about 22134.5605558367. The cubic root of 489938771 is about 788.3406773086.

The spelling of 489938771 in words is "four hundred eighty-nine million, nine hundred thirty-eight thousand, seven hundred seventy-one".