99319851 has 20 divisors (see below), whose sum is σ = 148635432. Its totient is φ = 66093408.

The previous prime is 99319849. The next prime is 99319853. The reversal of 99319851 is 15891399.

It is an interprime number because it is at equal distance from previous prime (99319849) and next prime (99319853).

It is not a de Polignac number, because 99319851 - 2¹ = 99319849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99319797 and 99319806.

It is not an unprimeable number, because it can be changed into a prime (99319853) 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 in 19 ways as a sum of consecutive naturals, for example, 83080 + ... + 84266.

Almost surely, 2^99319851 is an apocalyptic number.

99319851 is a deficient number, since it is larger than the sum of its proper divisors (49315581).

99319851 is a wasteful number, since it uses less digits than its factorization.

99319851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232 (or 2223 counting only the distinct ones).

The product of its digits is 87480, while the sum is 45.

The square root of 99319851 is about 9965.9345271781. The cubic root of 99319851 is about 463.1041645136.

The spelling of 99319851 in words is "ninety-nine million, three hundred nineteen thousand, eight hundred fifty-one".