99644416 has 88 divisors (see below), whose sum is σ = 213281024. Its totient is φ = 46448640.

The previous prime is 99644407. The next prime is 99644423. The reversal of 99644416 is 61444699.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364956 + ... + 1365028.

It is an arithmetic number, because the mean of its divisors is an integer number (2423648).

Almost surely, 2^99644416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99644416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106640512).

99644416 is an abundant number, since it is smaller than the sum of its proper divisors (113636608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99644416 is a wasteful number, since it uses less digits than its factorization.

99644416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 149 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 99644416 is about 9982.2049668397. The cubic root of 99644416 is about 463.6080717372.

The spelling of 99644416 in words is "ninety-nine million, six hundred forty-four thousand, four hundred sixteen".