99444240 has 160 divisors (see below), whose sum is σ = 391522560. Its totient is φ = 22726656.

The previous prime is 99444227. The next prime is 99444259. The reversal of 99444240 is 4244499.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 99444195 and 99444204.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 11832 + ... + 18408.

It is an arithmetic number, because the mean of its divisors is an integer number (2447016).

Almost surely, 2^99444240 is an apocalyptic number.

99444240 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99444240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195761280).

99444240 is an abundant number, since it is smaller than the sum of its proper divisors (292078320).

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

99444240 is a wasteful number, since it uses less digits than its factorization.

99444240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606 (or 6594 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 99444240 is about 9972.1732836930. The cubic root of 99444240 is about 463.2974156838.

The spelling of 99444240 in words is "ninety-nine million, four hundred forty-four thousand, two hundred forty".