489669771 has 16 divisors (see below), whose sum is σ = 661924224. Its totient is φ = 321958464.

The previous prime is 489669749. The next prime is 489669779. The reversal of 489669771 is 177966984.

It is not a de Polignac number, because 489669771 - 2⁹ = 489669259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489669779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71520 + ... + 78066.

It is an arithmetic number, because the mean of its divisors is an integer number (41370264).

Almost surely, 2^489669771 is an apocalyptic number.

489669771 is a deficient number, since it is larger than the sum of its proper divisors (172254453).

489669771 is a wasteful number, since it uses less digits than its factorization.

489669771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890.

The product of its digits is 4572288, while the sum is 57.

The square root of 489669771 is about 22128.4832512308. The cubic root of 489669771 is about 788.1963718854.

The spelling of 489669771 in words is "four hundred eighty-nine million, six hundred sixty-nine thousand, seven hundred seventy-one".