99485987 has 2 divisors, whose sum is σ = 99485988. Its totient is φ = 99485986.

The previous prime is 99485983. The next prime is 99485999. The reversal of 99485987 is 78958499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99485987 - 2² = 99485983 is a prime.

It is not a weakly prime, because it can be changed into another prime (99485983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49742993 + 49742994.

It is an arithmetic number, because the mean of its divisors is an integer number (49742994).

Almost surely, 2^99485987 is an apocalyptic number.

99485987 is a deficient number, since it is larger than the sum of its proper divisors (1).

99485987 is an equidigital number, since it uses as much as digits as its factorization.

99485987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 59.

The square root of 99485987 is about 9974.2662386764. The cubic root of 99485987 is about 463.3622378439.

The spelling of 99485987 in words is "ninety-nine million, four hundred eighty-five thousand, nine hundred eighty-seven".