99824140 has 48 divisors (see below), whose sum is σ = 235585728. Its totient is φ = 35253504.

The previous prime is 99824111. The next prime is 99824141. The reversal of 99824140 is 4142899.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 99824140.

It is not an unprimeable number, because it can be changed into a prime (99824141) 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 in 15 ways as a sum of consecutive naturals, for example, 2367 + ... + 14326.

It is an arithmetic number, because the mean of its divisors is an integer number (4908036).

Almost surely, 2^99824140 is an apocalyptic number.

It is an amenable number.

99824140 is an abundant number, since it is smaller than the sum of its proper divisors (135761588).

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

99824140 is a wasteful number, since it uses less digits than its factorization.

99824140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16738 (or 16736 counting only the distinct ones).

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

The square root of 99824140 is about 9991.2031307546. The cubic root of 99824140 is about 463.8866337687.

The spelling of 99824140 in words is "ninety-nine million, eight hundred twenty-four thousand, one hundred forty".