99641224 has 16 divisors (see below), whose sum is σ = 187862220. Its totient is φ = 49544640.

The previous prime is 99641207. The next prime is 99641257. The reversal of 99641224 is 42214699.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 99640324 + 900 = 9982^2 + 30^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 32959 + ... + 35854.

Almost surely, 2^99641224 is an apocalyptic number.

It is an amenable number.

99641224 is a deficient number, since it is larger than the sum of its proper divisors (88220996).

99641224 is a wasteful number, since it uses less digits than its factorization.

99641224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69000 (or 68996 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 99641224 is about 9982.0450810443. The cubic root of 99641224 is about 463.6031212917.

The spelling of 99641224 in words is "ninety-nine million, six hundred forty-one thousand, two hundred twenty-four".