99543312 has 180 divisors, whose sum is σ = 318378060. Its totient is φ = 28976640.

The previous prime is 99543293. The next prime is 99543317. The reversal of 99543312 is 21334599.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80568576 + 18974736 = 8976^2 + 4356^2 .

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

It is not an unprimeable number, because it can be changed into a prime (99543317) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 505198 + ... + 505394.

It is an arithmetic number, because the mean of its divisors is an integer number (1768767).

Almost surely, 2^99543312 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 99543312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159189030).

99543312 is an abundant number, since it is smaller than the sum of its proper divisors (218834748).

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

99543312 is a wasteful number, since it uses less digits than its factorization.

99543312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 242 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 99543312 is about 9977.1394698080. The cubic root of 99543312 is about 463.4512190190.

The spelling of 99543312 in words is "ninety-nine million, five hundred forty-three thousand, three hundred twelve".