99801424 has 20 divisors (see below), whose sum is σ = 204740244. Its totient is φ = 46965248.

The previous prime is 99801419. The next prime is 99801437. The reversal of 99801424 is 42410899.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32035600 + 67765824 = 5660^2 + 8232^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183187 + ... + 183730.

Almost surely, 2^99801424 is an apocalyptic number.

It is an amenable number.

99801424 is an abundant number, since it is smaller than the sum of its proper divisors (104938820).

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

99801424 is a wasteful number, since it uses less digits than its factorization.

99801424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366942 (or 366936 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 99801424 is about 9990.0662660465. The cubic root of 99801424 is about 463.8514437229.

The spelling of 99801424 in words is "ninety-nine million, eight hundred one thousand, four hundred twenty-four".