8791087 has 4 divisors (see below), whose sum is σ = 8809920. Its totient is φ = 8772256.

The previous prime is 8791063. The next prime is 8791093. The reversal of 8791087 is 7801978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7801978 = 2 ⋅3900989.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8791087 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8791187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8698 + ... + 9655.

It is an arithmetic number, because the mean of its divisors is an integer number (2202480).

Almost surely, 2^8791087 is an apocalyptic number.

8791087 is a deficient number, since it is larger than the sum of its proper divisors (18833).

8791087 is a wasteful number, since it uses less digits than its factorization.

8791087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18832.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 8791087 is about 2964.9767284078. The cubic root of 8791087 is about 206.3862971768.

The spelling of 8791087 in words is "eight million, seven hundred ninety-one thousand, eighty-seven".