489386791 has 4 divisors (see below), whose sum is σ = 489468784. Its totient is φ = 489304800.

The previous prime is 489386773. The next prime is 489386839. The reversal of 489386791 is 197683984.

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

It is a cyclic number.

It is not a de Polignac number, because 489386791 - 2⁵ = 489386759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489386731) 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 in 3 ways as a sum of consecutive naturals, for example, 31275 + ... + 44236.

It is an arithmetic number, because the mean of its divisors is an integer number (122367196).

Almost surely, 2^489386791 is an apocalyptic number.

489386791 is a deficient number, since it is larger than the sum of its proper divisors (81993).

489386791 is an equidigital number, since it uses as much as digits as its factorization.

489386791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81992.

The product of its digits is 2612736, while the sum is 55.

The square root of 489386791 is about 22122.0883055827. The cubic root of 489386791 is about 788.0445098197.

It can be divided in two parts, 48 and 9386791, that added together give a palindrome (9386839).

The spelling of 489386791 in words is "four hundred eighty-nine million, three hundred eighty-six thousand, seven hundred ninety-one".