887494858821 has 6 divisors (see below), whose sum is σ = 1281937018310. Its totient is φ = 591663239208.

The previous prime is 887494858781. The next prime is 887494858847. The reversal of 887494858821 is 128858494788.

887494858821 is a `hidden beast` number, since 8 + 8 + 7 + 49 + 485 + 88 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 662286716100 + 225208142721 = 813810^2 + 474561^2 .

It is not a de Polignac number, because 887494858821 - 2⁷ = 887494858693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 887494858821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (887494850821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49305269926 + ... + 49305269943.

Almost surely, 2^887494858821 is an apocalyptic number.

It is an amenable number.

887494858821 is a deficient number, since it is larger than the sum of its proper divisors (394442159489).

887494858821 is a wasteful number, since it uses less digits than its factorization.

887494858821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98610539875 (or 98610539872 counting only the distinct ones).

The product of its digits is 330301440, while the sum is 72.

The spelling of 887494858821 in words is "eight hundred eighty-seven billion, four hundred ninety-four million, eight hundred fifty-eight thousand, eight hundred twenty-one".