487639986 has 8 divisors (see below), whose sum is σ = 975279984. Its totient is φ = 162546660.

The previous prime is 487639979. The next prime is 487639987. The reversal of 487639986 is 689936784.

It is a sphenic number, since it is the product of 3 distinct primes.

487639986 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (487639987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40636660 + ... + 40636671.

It is an arithmetic number, because the mean of its divisors is an integer number (121909998).

Almost surely, 2^487639986 is an apocalyptic number.

487639986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

487639986 is a wasteful number, since it uses less digits than its factorization.

487639986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81273336.

The product of its digits is 15676416, while the sum is 60.

The square root of 487639986 is about 22082.5719969391. The cubic root of 487639986 is about 787.1057832401.

The spelling of 487639986 in words is "four hundred eighty-seven million, six hundred thirty-nine thousand, nine hundred eighty-six".