99239040 has 128 divisors (see below), whose sum is σ = 351532800. Its totient is φ = 26459136.

The previous prime is 99239039. The next prime is 99239053. The reversal of 99239040 is 4093299.

It is a tau number, because it is divible by the number of its divisors (128).

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 = 99238986 and 99239004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14409 + ... + 20151.

It is an arithmetic number, because the mean of its divisors is an integer number (2746350).

Almost surely, 2^99239040 is an apocalyptic number.

99239040 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 99239040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175766400).

99239040 is an abundant number, since it is smaller than the sum of its proper divisors (252293760).

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

99239040 is a wasteful number, since it uses less digits than its factorization.

99239040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771 (or 5753 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 99239040 is about 9961.8793407670. The cubic root of 99239040 is about 462.9785297932.

The spelling of 99239040 in words is "ninety-nine million, two hundred thirty-nine thousand, forty".