9899053987 has 2 divisors, whose sum is σ = 9899053988. Its totient is φ = 9899053986.

The previous prime is 9899053939. The next prime is 9899054023. The reversal of 9899053987 is 7893509989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9899053987 - 2¹⁹ = 9898529699 is a prime.

It is not a weakly prime, because it can be changed into another prime (9899053187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949526993 + 4949526994.

It is an arithmetic number, because the mean of its divisors is an integer number (4949526994).

Almost surely, 2^9899053987 is an apocalyptic number.

9899053987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899053987 is an equidigital number, since it uses as much as digits as its factorization.

9899053987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44089920, while the sum is 67.

The square root of 9899053987 is about 99493.9897028961. The cubic root of 9899053987 is about 2147.1607726751.

The spelling of 9899053987 in words is "nine billion, eight hundred ninety-nine million, fifty-three thousand, nine hundred eighty-seven".