99489472 has 28 divisors (see below), whose sum is σ = 207817720. Its totient is φ = 47126016.

The previous prime is 99489469. The next prime is 99489479. The reversal of 99489472 is 27498499.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (99489479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39693 + ... + 42124.

Almost surely, 2^99489472 is an apocalyptic number.

It is an amenable number.

99489472 is an abundant number, since it is smaller than the sum of its proper divisors (108328248).

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

99489472 is a wasteful number, since it uses less digits than its factorization.

99489472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81848 (or 81838 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 99489472 is about 9974.4409367142. The cubic root of 99489472 is about 463.3676483163.

The spelling of 99489472 in words is "ninety-nine million, four hundred eighty-nine thousand, four hundred seventy-two".