99489312 has 72 divisors (see below), whose sum is σ = 304697484. Its totient is φ = 30610944.

The previous prime is 99489293. The next prime is 99489347. The reversal of 99489312 is 21398499.

It can be written as a sum of positive squares in 2 ways, for example, as 96118416 + 3370896 = 9804^2 + 1836^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9543 + ... + 17030.

Almost surely, 2^99489312 is an apocalyptic number.

It is an amenable number.

99489312 is an abundant number, since it is smaller than the sum of its proper divisors (205208172).

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

99489312 is a wasteful number, since it uses less digits than its factorization.

99489312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26602 (or 26591 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 99489312 is about 9974.4329162113. The cubic root of 99489312 is about 463.3673999186.

The spelling of 99489312 in words is "ninety-nine million, four hundred eighty-nine thousand, three hundred twelve".