487189487 has 4 divisors (see below), whose sum is σ = 487352736. Its totient is φ = 487026240.

The previous prime is 487189481. The next prime is 487189489. The reversal of 487189487 is 784981784.

It is a happy number.

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-487189487 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 (487189481) 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, 77063 + ... + 83144.

It is an arithmetic number, because the mean of its divisors is an integer number (121838184).

Almost surely, 2^487189487 is an apocalyptic number.

487189487 is a deficient number, since it is larger than the sum of its proper divisors (163249).

487189487 is a wasteful number, since it uses less digits than its factorization.

487189487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163248.

The product of its digits is 3612672, while the sum is 56.

The square root of 487189487 is about 22072.3693109734. The cubic root of 487189487 is about 786.8633232089.

The spelling of 487189487 in words is "four hundred eighty-seven million, one hundred eighty-nine thousand, four hundred eighty-seven".