8910920987 has 2 divisors, whose sum is σ = 8910920988. Its totient is φ = 8910920986.

The previous prime is 8910920947. The next prime is 8910921023. The reversal of 8910920987 is 7890290198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8910920987 - 2²⁴ = 8894143771 is a prime.

It is not a weakly prime, because it can be changed into another prime (8910920947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4455460493 + 4455460494.

It is an arithmetic number, because the mean of its divisors is an integer number (4455460494).

Almost surely, 2^8910920987 is an apocalyptic number.

8910920987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8910920987 is an equidigital number, since it uses as much as digits as its factorization.

8910920987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 53.

The square root of 8910920987 is about 94397.6746906406. The cubic root of 8910920987 is about 2073.1983965082.

The spelling of 8910920987 in words is "eight billion, nine hundred ten million, nine hundred twenty thousand, nine hundred eighty-seven".