8791787087 has 4 divisors (see below), whose sum is σ = 8801767296. Its totient is φ = 8781806880.

The previous prime is 8791787063. The next prime is 8791787143. The reversal of 8791787087 is 7807871978.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8791787087 - 2¹² = 8791782991 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 (8791781087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4988783 + ... + 4990544.

It is an arithmetic number, because the mean of its divisors is an integer number (2200441824).

Almost surely, 2^8791787087 is an apocalyptic number.

8791787087 is a deficient number, since it is larger than the sum of its proper divisors (9980209).

8791787087 is an equidigital number, since it uses as much as digits as its factorization.

8791787087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9980208.

The product of its (nonzero) digits is 11063808, while the sum is 62.

The square root of 8791787087 is about 93764.5300046878. The cubic root of 8791787087 is about 2063.9177562444.

The spelling of 8791787087 in words is "eight billion, seven hundred ninety-one million, seven hundred eighty-seven thousand, eighty-seven".