99644444 has 6 divisors (see below), whose sum is σ = 174377784. Its totient is φ = 49822220.

The previous prime is 99644443. The next prime is 99644449. The reversal of 99644444 is 44444699.

99644444 is a modest number, since divided by 44444 gives 996 as remainder.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99644395 and 99644404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99644443) 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, 12455552 + ... + 12455559.

It is an arithmetic number, because the mean of its divisors is an integer number (29062964).

Almost surely, 2^99644444 is an apocalyptic number.

It is an amenable number.

99644444 is a deficient number, since it is larger than the sum of its proper divisors (74733340).

99644444 is a wasteful number, since it uses less digits than its factorization.

99644444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24911115 (or 24911113 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 99644444 is about 9982.2063693354. The cubic root of 99644444 is about 463.6081151617.

The spelling of 99644444 in words is "ninety-nine million, six hundred forty-four thousand, four hundred forty-four".