8981406873 has 16 divisors (see below), whose sum is σ = 13884301440. Its totient is φ = 5727273552.

The previous prime is 8981406869. The next prime is 8981406991. The reversal of 8981406873 is 3786041898.

8981406873 is a `hidden beast` number, since 89 + 81 + 406 + 87 + 3 = 666.

It is not a de Polignac number, because 8981406873 - 2² = 8981406869 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8981406373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7230786 + ... + 7232027.

It is an arithmetic number, because the mean of its divisors is an integer number (867768840).

Almost surely, 2^8981406873 is an apocalyptic number.

It is an amenable number.

8981406873 is a deficient number, since it is larger than the sum of its proper divisors (4902894567).

8981406873 is a wasteful number, since it uses less digits than its factorization.

8981406873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14462845 (or 14462839 counting only the distinct ones).

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

The square root of 8981406873 is about 94770.2847574069. The cubic root of 8981406873 is about 2078.6504183698.

The spelling of 8981406873 in words is "eight billion, nine hundred eighty-one million, four hundred six thousand, eight hundred seventy-three".