8781093 has 24 divisors (see below), whose sum is σ = 13267800. Its totient is φ = 5591040.

The previous prime is 8781083. The next prime is 8781107. The reversal of 8781093 is 3901878.

It can be written as a sum of positive squares in 4 ways, for example, as 675684 + 8105409 = 822^2 + 2847^2 .

It is not a de Polignac number, because 8781093 - 2⁴ = 8781077 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8781013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19333 + ... + 19781.

It is an arithmetic number, because the mean of its divisors is an integer number (552825).

Almost surely, 2^8781093 is an apocalyptic number.

It is an amenable number.

8781093 is a deficient number, since it is larger than the sum of its proper divisors (4486707).

8781093 is a wasteful number, since it uses less digits than its factorization.

8781093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 8781093 is about 2963.2909070829. The cubic root of 8781093 is about 206.3080585863.

The spelling of 8781093 in words is "eight million, seven hundred eighty-one thousand, ninety-three".