487789 has 2 divisors, whose sum is σ = 487790. Its totient is φ = 487788.

The previous prime is 487783. The next prime is 487793. The reversal of 487789 is 987784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412164 + 75625 = 642^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 487789 - 2⁵ = 487757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243894 + 243895.

It is an arithmetic number, because the mean of its divisors is an integer number (243895).

2⁴⁸⁷⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

487789 is a deficient number, since it is larger than the sum of its proper divisors (1).

487789 is an equidigital number, since it uses as much as digits as its factorization.

487789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 43.

The square root of 487789 is about 698.4189287240. The cubic root of 487789 is about 78.7185950193.

The spelling of 487789 in words is "four hundred eighty-seven thousand, seven hundred eighty-nine".