99904500 has 108 divisors (see below), whose sum is σ = 317294796.
Its totient is φ = 26462400.
The previous prime is 99904499. The next prime is 99904501. The reversal of 99904500 is 540999.
Multipling 99904500 by its product of nonzero digits (14580), we get a square (1456607610000 = 12069002).
It is a powerful number, because all its prime factors have an exponent greater than 1
and also an Achilles number because it is not a perfect power.
It is an interprime number because it is at equal distance from previous prime (99904499) and next prime (99904501).
It can be written as a sum of positive squares in 6 ways, for example, as 74442384 + 25462116 = 8628^2 + 5046^2
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (99904501) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 670426 + ... + 670574.
Almost surely, 299904500 is an apocalyptic number.
99904500 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 99904500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158647398).
99904500 is an abundant number, since it is smaller than the sum of its proper divisors (217390296).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99904500 is a wasteful number, since it uses less digits than its factorization.
99904500 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 323 (or 159 counting only the distinct ones).
The product of its (nonzero) digits is 14580, while the sum is 36.
The square root of 99904500 is about 9995.2238594241.
The cubic root of 99904500 is about 464.0110790557.
The spelling of 99904500 in words is "ninety-nine million, nine hundred four thousand, five hundred".