99199647 has 12 divisors (see below), whose sum is σ = 148595720. Its totient is φ = 66132936.

The previous prime is 99199643. The next prime is 99199651. The reversal of 99199647 is 74699199.

It is an interprime number because it is at equal distance from previous prime (99199643) and next prime (99199651).

It is not a de Polignac number, because 99199647 - 2² = 99199643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99199593 and 99199602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99199643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203872 + ... + 204357.

Almost surely, 2^99199647 is an apocalyptic number.

99199647 is a deficient number, since it is larger than the sum of its proper divisors (49396073).

99199647 is an equidigital number, since it uses as much as digits as its factorization.

99199647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408244 (or 408232 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 99199647 is about 9959.9019573488. The cubic root of 99199647 is about 462.9172618118.

The spelling of 99199647 in words is "ninety-nine million, one hundred ninety-nine thousand, six hundred forty-seven".