487893861 has 40 divisors (see below), whose sum is σ = 897033984. Its totient is φ = 257346720.

The previous prime is 487893859. The next prime is 487893869. The reversal of 487893861 is 168398784.

487893861 is a `hidden beast` number, since 487 + 89 + 3 + 86 + 1 = 666.

It is not a de Polignac number, because 487893861 - 2¹ = 487893859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 487893798 and 487893807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487893869) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 25725 + ... + 40466.

Almost surely, 2^487893861 is an apocalyptic number.

It is an amenable number.

487893861 is a deficient number, since it is larger than the sum of its proper divisors (409140123).

487893861 is a wasteful number, since it uses less digits than its factorization.

487893861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66223 (or 66214 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 487893861 is about 22088.3195603468. The cubic root of 487893861 is about 787.2423538104.

It can be divided in two parts, 48789 and 3861, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 487893861 in words is "four hundred eighty-seven million, eight hundred ninety-three thousand, eight hundred sixty-one".