8931056987 has 2 divisors, whose sum is σ = 8931056988. Its totient is φ = 8931056986.

The previous prime is 8931056969. The next prime is 8931056999. The reversal of 8931056987 is 7896501398.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8931056987 - 2¹⁴ = 8931040603 is a prime.

It is not a weakly prime, because it can be changed into another prime (8931046987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4465528493 + 4465528494.

It is an arithmetic number, because the mean of its divisors is an integer number (4465528494).

Almost surely, 2^8931056987 is an apocalyptic number.

8931056987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8931056987 is an equidigital number, since it uses as much as digits as its factorization.

8931056987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The square root of 8931056987 is about 94504.2696760310. The cubic root of 8931056987 is about 2074.7588232393.

The spelling of 8931056987 in words is "eight billion, nine hundred thirty-one million, fifty-six thousand, nine hundred eighty-seven".