99128384 has 14 divisors (see below), whose sum is σ = 196708014. Its totient is φ = 49564160.

The previous prime is 99128353. The next prime is 99128389. The reversal of 99128384 is 48382199.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 94633984 + 4494400 = 9728^2 + 2120^2 .

It is not an unprimeable number, because it can be changed into a prime (99128389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774377 + ... + 774504.

Almost surely, 2^99128384 is an apocalyptic number.

It is an amenable number.

99128384 is a deficient number, since it is larger than the sum of its proper divisors (97579630).

99128384 is a wasteful number, since it uses less digits than its factorization.

99128384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548893 (or 1548883 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 99128384 is about 9956.3238195631. The cubic root of 99128384 is about 462.8063851555.

The spelling of 99128384 in words is "ninety-nine million, one hundred twenty-eight thousand, three hundred eighty-four".