99990132 has 96 divisors (see below), whose sum is σ = 266595840. Its totient is φ = 28897920.

The previous prime is 99990113. The next prime is 99990139. The reversal of 99990132 is 23109999.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99990139) 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 31 ways as a sum of consecutive naturals, for example, 287983 + ... + 288329.

It is an arithmetic number, because the mean of its divisors is an integer number (2777040).

Almost surely, 2^99990132 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 99990132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133297920).

99990132 is an abundant number, since it is smaller than the sum of its proper divisors (166605708).

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

99990132 is a wasteful number, since it uses less digits than its factorization.

99990132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 42.

The square root of 99990132 is about 9999.5065878272. The cubic root of 99990132 is about 464.1436151262.

The spelling of 99990132 in words is "ninety-nine million, nine hundred ninety thousand, one hundred thirty-two".