99943424 has 88 divisors (see below), whose sum is σ = 232670208. Its totient is φ = 42024960.

The previous prime is 99943409. The next prime is 99943433. The reversal of 99943424 is 42434999.

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, 523169 + ... + 523359.

Almost surely, 2^99943424 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 99943424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116335104).

99943424 is an abundant number, since it is smaller than the sum of its proper divisors (132726784).

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

99943424 is a wasteful number, since it uses less digits than its factorization.

99943424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 273 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 99943424 is about 9997.1707997813. The cubic root of 99943424 is about 464.0713326717.

The spelling of 99943424 in words is "ninety-nine million, nine hundred forty-three thousand, four hundred twenty-four".