99990084 has 48 divisors (see below), whose sum is σ = 247826880. Its totient is φ = 31288320.

The previous prime is 99990083. The next prime is 99990091. The reversal of 99990084 is 48009999.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (99990083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23824 + ... + 27704.

It is an arithmetic number, because the mean of its divisors is an integer number (5163060).

Almost surely, 2^99990084 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 99990084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123913440).

99990084 is an abundant number, since it is smaller than the sum of its proper divisors (147836796).

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

99990084 is a wasteful number, since it uses less digits than its factorization.

99990084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020 (or 4018 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 99990084 is about 9999.5041877085. The cubic root of 99990084 is about 464.1435408559.

The spelling of 99990084 in words is "ninety-nine million, nine hundred ninety thousand, eighty-four".