99789472 has 24 divisors (see below), whose sum is σ = 197788500. Its totient is φ = 49557504.

The previous prime is 99789451. The next prime is 99789499. The reversal of 99789472 is 27498799.

It can be written as a sum of positive squares in 2 ways, for example, as 96118416 + 3671056 = 9804^2 + 1916^2 .

It is an unprimeable number.

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, 5697 + ... + 15232.

Almost surely, 2^99789472 is an apocalyptic number.

It is an amenable number.

99789472 is a deficient number, since it is larger than the sum of its proper divisors (97999028).

99789472 is a wasteful number, since it uses less digits than its factorization.

99789472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21088 (or 21080 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 55.

The square root of 99789472 is about 9989.4680539056. The cubic root of 99789472 is about 463.8329263726.

The spelling of 99789472 in words is "ninety-nine million, seven hundred eighty-nine thousand, four hundred seventy-two".