99944320 has 96 divisors (see below), whose sum is σ = 278025480. Its totient is φ = 34255872.

The previous prime is 99944293. The next prime is 99944321. The reversal of 99944320 is 2344999.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99944321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29767 + ... + 32953.

Almost surely, 2^99944320 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 99944320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139012740).

99944320 is an abundant number, since it is smaller than the sum of its proper divisors (178081160).

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

99944320 is a wasteful number, since it uses less digits than its factorization.

99944320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220 (or 3201 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 99944320 is about 9997.2156123593. The cubic root of 99944320 is about 464.0727194785.

The spelling of 99944320 in words is "ninety-nine million, nine hundred forty-four thousand, three hundred twenty".