99989528 has 8 divisors (see below), whose sum is σ = 187480380. Its totient is φ = 49994760.

The previous prime is 99989509. The next prime is 99989537. The reversal of 99989528 is 82598999.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6249338 + ... + 6249353.

Almost surely, 2^99989528 is an apocalyptic number.

It is an amenable number.

99989528 is a deficient number, since it is larger than the sum of its proper divisors (87490852).

99989528 is a wasteful number, since it uses less digits than its factorization.

99989528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12498697 (or 12498693 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 59.

The square root of 99989528 is about 9999.4763862914. The cubic root of 99989528 is about 464.1426805563.

The spelling of 99989528 in words is "ninety-nine million, nine hundred eighty-nine thousand, five hundred twenty-eight".