486857988 has 36 divisors (see below), whose sum is σ = 1263933580. Its totient is φ = 157899456.

The previous prime is 486857981. The next prime is 486857993. The reversal of 486857988 is 889758684.

486857988 is a `hidden beast` number, since 486 + 8 + 5 + 79 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 287709444 + 199148544 = 16962^2 + 14112^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (486857981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181423 + ... + 184086.

Almost surely, 2^486857988 is an apocalyptic number.

It is an amenable number.

486857988 is an abundant number, since it is smaller than the sum of its proper divisors (777075592).

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

486857988 is a wasteful number, since it uses less digits than its factorization.

486857988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365556 (or 365551 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The square root of 486857988 is about 22064.8586671204. The cubic root of 486857988 is about 786.6848138908.

The spelling of 486857988 in words is "four hundred eighty-six million, eight hundred fifty-seven thousand, nine hundred eighty-eight".