486521987 has 4 divisors (see below), whose sum is σ = 556025136. Its totient is φ = 417018840.

The previous prime is 486521947. The next prime is 486521989. The reversal of 486521987 is 789125684.

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

It is not a de Polignac number, because 486521987 - 2⁸ = 486521731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (486521989) 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, 34751564 + ... + 34751577.

It is an arithmetic number, because the mean of its divisors is an integer number (139006284).

Almost surely, 2^486521987 is an apocalyptic number.

486521987 is a deficient number, since it is larger than the sum of its proper divisors (69503149).

486521987 is an equidigital number, since it uses as much as digits as its factorization.

486521987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69503148.

The product of its digits is 967680, while the sum is 50.

The square root of 486521987 is about 22057.2434134458. The cubic root of 486521987 is about 786.5037975769.

The spelling of 486521987 in words is "four hundred eighty-six million, five hundred twenty-one thousand, nine hundred eighty-seven".