987047893 has 32 divisors (see below), whose sum is σ = 1121928192. Its totient is φ = 862444800.

The previous prime is 987047879. The next prime is 987047903. The reversal of 987047893 is 398740789.

It is a cyclic number.

It is not a de Polignac number, because 987047893 - 2²¹ = 984950741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987047293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2646055 + ... + 2646427.

It is an arithmetic number, because the mean of its divisors is an integer number (35060256).

Almost surely, 2^987047893 is an apocalyptic number.

It is an amenable number.

987047893 is a deficient number, since it is larger than the sum of its proper divisors (134880299).

987047893 is a wasteful number, since it uses less digits than its factorization.

987047893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 987047893 is about 31417.3183610569. The cubic root of 987047893 is about 995.6638560318.

The spelling of 987047893 in words is "nine hundred eighty-seven million, forty-seven thousand, eight hundred ninety-three".