99299840 has 80 divisors (see below), whose sum is σ = 241591680. Its totient is φ = 39137280.

The previous prime is 99299813. The next prime is 99299843. The reversal of 99299840 is 4899299.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (99299843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201995 + ... + 202485.

It is an arithmetic number, because the mean of its divisors is an integer number (3019896).

Almost surely, 2^99299840 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 99299840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120795840).

99299840 is an abundant number, since it is smaller than the sum of its proper divisors (142291840).

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

99299840 is an equidigital number, since it uses as much as digits as its factorization.

99299840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 99299840 is about 9964.9305065314. The cubic root of 99299840 is about 463.0730602923.

The spelling of 99299840 in words is "ninety-nine million, two hundred ninety-nine thousand, eight hundred forty".