489409887 has 16 divisors (see below), whose sum is σ = 684564480. Its totient is φ = 310581600.

The previous prime is 489409873. The next prime is 489409903. The reversal of 489409887 is 788904984.

It is not a de Polignac number, because 489409887 - 2⁷ = 489409759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489407887) 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 15 ways as a sum of consecutive naturals, for example, 33439 + ... + 45792.

It is an arithmetic number, because the mean of its divisors is an integer number (42785280).

Almost surely, 2^489409887 is an apocalyptic number.

489409887 is a deficient number, since it is larger than the sum of its proper divisors (195154593).

489409887 is a wasteful number, since it uses less digits than its factorization.

489409887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79334.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 489409887 is about 22122.6103116246. The cubic root of 489409887 is about 788.0569065511.

The spelling of 489409887 in words is "four hundred eighty-nine million, four hundred nine thousand, eight hundred eighty-seven".